Master the advanced concepts of game development for iOS to build impressive games About This Book Create a complete game with advanced techniques through the course of the book using in-depth, hands-on instructions Learn how to multi-task and improve performance optimization in your game playing experience The author, Miguel, has 11 years of iOS game development using xcode and has released over 10 games to the Apple AppStoreMaster player movement using touch controls as well as discuss motion controls Who This Book Is For This book is for those who have created an iOS game already and want to hone their skills. A reasonable level of knowledge and an understanding of the core elements and applications would be helpful. What You Will Learn Blast off and start developing fun games Optimize the assets for the best performance in the game app Master player movement using touch controls as well as discuss motion controls Perform bug Squashing by testing and debugging Design interesting various characters and enemies for your game Test your game on both, the simulator on the computer and on real devices Tweak and fine tune the code and graphics before the release of your app Uncover some awesome new gameplay by adding in multiplayer elements, to get more people playing together In Detail iOS is an operating system for Apple manufactured phones and tablets. Mobile gaming is one of the fastest-growing industries, and compatibility with iOS is now becoming the norm for game developers. SpriteKit is part of the native SDK from Apple, and enables developers to make simple entry into game development without unnecessary overhead and a long learning process. SpriteKit also provides other functionality that is useful for games, including basic sound playback support and physics simulation. In addition, Xcode provides built-in support for SpriteKit so that you can create complex special effects and texture atlases directly in Xcode. This combination of framework and tools makes SpriteKit a good choice for games and other apps that require similar kinds of animation. Become a master in iOS game development through this fast and fun guide! In the beginning, we’ll tell you everything you need to plan and design your game. You’ll then start developing your game through step-by-step instructions using the various built-in technologies of Xcode. From there on, we discuss how to deploy your game to the iOS App Store, as well as monetizing it to make more revenue. You will also learn advanced techniques to improve your game playing experience, including better multi-tasking, improved performance optimization, battery management, and more. To end the book off, we’ll show you how to update your game with different features, then port the update to the App Store. Style and approach This book provides an easy-to-understand and fun approach to game development, with step-by-step instructions and detailed explanation of each block of code. The topics covered range from easy to advanced, so buckle up for a fast-paced ride!

Discover all the secrets of Unreal Engine and create seven fully functional games with the help of step-by-step instructions About This Book Understand what a Blueprint is and how to create a complex visual *ing code Discover the infinite possibilities that Unreal Engine offers, and understand which tool to use, where and when Learn to think like a real game developer in order to create enjoyable and bug-free games using this comprehensive and practical handbook Who This Book Is For This book is ideal for intermediate level developers who know how to use Unreal Engine and want to go through a series of projects that will further their expertise. Working knowledge of C++ is a must. What You Will Learn Write clean and reusable Blueprint *s Develop any kind of game you have in mind, following the rules used by experts Move through Unreal Engine 4, always knowing what you are doing and where to find the right tool for your needs Integrate C++ code into your projects using Visual Studio and the tools that Unreal provides Extricate between classes, nodes, interfaces, macros, and functions Work with different types of assets, from 3D objects to audio sources, from UI buttons to animations Explore all the aspects of the game logic—collisions, navigation meshes, matinees, volumes, events, and states In Detail With the arrival of Unreal Engine 4, a new wonderful tool was born: Blueprint. This visual *ing tool allows even non-programmers to develop the logic for their games, allowing almost anyone to create entire games without the need to write a single line of code. The range of features you can access with Blueprint * is pretty extensive, making it one of the foremost choices for many game developers. Unreal Engine Game Development Blueprints helps you unleash the real power of Unreal by helping you to create engaging and spectacular games. It will explain all the aspects of developing a game, focusing on visual *ing, and giving you all the information you need to create your own games. We start with an introductory chapter to help you move fluidly inside the Blueprint user interface, recognize its different components, and understand any already written Blueprint *. Following this, you will learn how to modify generated Blueprint classes to produce a single player tic-tac-toe game and personalize it. Next, you will learn how to create simple user interfaces, and how to extend Blueprints through code. This will help you make an informed decision between choosing Blueprint or code. You will then see the real power of Unreal unleashed as you create a beautiful scene with moving, AI controlled objects, particles, and lights. Then, you will learn how to create AI using a behavior tree and a global level Blueprint, how to modify the camera, and how to shoot custom bullets. Finally, you will create a complex game using Blueprintable components complete with a menu, power-up, dangerous objects, and different weapons. Style and approach This is an easy-to-follow guide full of practical game examples. Each chapter contains step-by-step instructions to build a complete game and each game uses a different tool in order to cover all the topics in a detailed and progressive manner.

A bestseller when it was published in 1970 at the height of the Mexican-American civil rights movement, Chicano unfolds the fates and fortunes of the Sandoval family, who flee the chaos and poverty of the Mexican Revolution and begin life anew in the United States.Patriarch Hector Sandoval works the fields and struggles to provide for his family even as he faces discrimination and injustice. Of his children, only Pete Sandoval is able to create a brighter existence, at least for a time. But when Pete's daughter Mariana falls in love with David, an Anglo student, it sets in motion a clash of cultures. David refuses to marry Mariana, fearing the reaction of his family and friends. Mariana, pregnant with David's child, is trapped between two worlds and shunned by both because of the man she loves. The complications of their relationship speak volumes -- even today -- about the shifting sands of racial politics in America.In his foreword, award-winning author Rubn Martnez reflects on the historical significance of Chicano's initial publication and explores how cultural perceptions have changed since the story of the Sandoval family first appeared in print.

Shan Frankland forever abandoned the world she knew to come to the rescue of a lost colony on a distant and dangerous planet -- a hostile world coveted by two alien races and fiercely protected by a third. But in the course of her mission, she overstepped a boundary and stumbled into forbidden lands. And she can never go back -- to being neutral, to being safe. To being human. War is coming again to Cavanagh's Star -- and this time, the instigators will be the troublesome gethes from the faraway planet Earth. Former Environmental Enforcement Officer Shan Frankland has already crossed a line, and now she is a prize to be captured ... or a threat to be eliminated. But saving a coveted world and its fragile native population may require of her one unthinkable sacrifice: the destruction of her own ruthless, invading species.

A talented healer forced to become a fugitive for a killing he wasn't responsible for, Jake Horn found sanctuary in the rough Dakota town of Sweet Sorrow -- and in the tin badge that marks him as the local law. Now his discovery of a dead ranch hand is bringing his demons home. As a doctor and a sheriff, Jake's witnessed death in all its dark guises -- and he recognizes a murder when he sees one. But asking too many questions of the wrong people is asking for trouble, and suddenly expert killers are gathering with their sights on a lawman who's got a need to see justice done. The big gundown is coming, as relentlessly as the winter snow whipping across the prairie. And there's nowhere for a good man to hide when five shooters blinded by hate won't leave Sweet Sorrow until he's dead.

From critically acclaimed, award-winning poet and memoirist Paulette Jiles comes a debut novel of startling power and savage beauty -- an extraordinary story of survival and love in the midst of a torn nation's bitter agony. For the Colleys of southeastern Missouri, the War Between the States is a plague that threatens devastation despite the family's avowed neutrality. For eighteen-year-old Adair Colley, it is a nightmare seen at its most terrible on the day the Union Militia arrives to set her house on fire, driving her brother into hiding and dragging her widowed father away, beaten and bloodied. Left to care for two young sisters, Adair sees no road but the one that leads away, as they start out on foot into the winter mountains in search of a safe haven. Even the least of hopes is doomed, however, in a world forever changed, as the treachery of a fellow traveler brings about Adair's arrest on charges of “enemy collaboration.” Torn from her terrified sisters, the girl suddenly finds herself consigned to a living hell, caged with the criminal and the deranged in a filthy women's prison in St. Louis. But young Adair is sustained by a strong heart, and love can live even in a place of horror and despair. Her interrogator, a Union major, falls in love with her and she finds herself returning her feelings despite herself. The major vows to return for her when the fighting is over, and before he returns to war, he leaves her with a last precious gift: freedom. Weakened in body but not in spirit, Adair must now travel alone through dangerous, unknown territory -- an escaped “enemy woman” surrounded by perils and misery on all sides. She makes her harrowing way south buoyed by a promise, seeking a home and a family that may be nothing more than a memory. Based on a little known chapter in America's bloodiest epoch, Paulette Jiles's poignant, powerful, and exquisitely rendered novel about war's collateral victims is masterful work, captivating and authentic -- a lyrical, memorable tale of endurance and sacrifice that will stand alongside Cold Mountain and other classic Civil War era-set literature for decades to come.

On the borderland between this world and the world of Quiddity, the sea of our dreams, sits Everville.For years it has lived in ignorance of the gleaming shore on which it lies.But its ignorance is not bliss. Opening the door between worlds, Clive Barker delivers his characters into the heart of the human mystery; into a place of revelation, where the forces which have shaped our past and are ready to destroy our future are at work.

Rachel Morgan's back! Bestselling author Kim Harrison returns with a new supernatural adventure that fans of Laurell K. Hamilton and Charlaine Harris won't want to miss. Some days, you just can't win. Witch and former bounty hunter Rachel Morgan's managed to escape her corrupt company, survive living with a vampire, start her own runner service, and face down a vampire master. But her vampire roommate Ivy is off the wagon, her human boyfriend Nick is out of town indefinitely and doesn't sound like he's coming back while the far-too-seductive vampire Kisten is looking way too tempting, and there's a turf war erupting in Cincinnati's underworld. And there's a greater evil still. To put the vampire master behind bars and save her family, Rachel made a desperate bargain and now there's hell to pay—literally. For if Rachel cannot stop him, the archdemon Algaliarept will pull her into the sorcerous ever-after to forfeit her soul as his slave. Forever.

The incomparable J. A. Jance returns with a powerful tale that explores the darkest corners of human nature, revealing the grievous injuries inflicted behind locked doors, the unseen wounds that bleed and destroy and never heal ... The heat is a killer in Cochise County, Arizona, with temperatures over 100 degrees. In the suffocating stillness of an airless trailer, a woman is lying dead, a bullet hole in her chest. Why someone would murder a harmless loner with a soft spot for stray dogs is only one of the questions nagging at the local police; another is why the killer used an eighty-five-year-old bullet, fired from the same weapon that slaughtered two other women who were discovered bound, naked, and gruesomely posed on the remote edge of a rancher's land. The slayings are as oppressive as the blistering heat for Sheriff Joanna Brady, who must shoulder the added double burden of a brutal reelection campaign and major developments on the home front. With suddenly more on her plate than many big-city law officers have to contend with, Joanna must put marital distractions and an opponent's dirty tricks in the background and deal with the terrifying reality that now threatens everyone in her jurisdiction: a serial killer in their midst. A twisted and lethal drama is unfolding in this small corner of the southwestern desert as fear, hatred, and the evil at the core of one family's history come to a rapid boil beneath a merciless Arizona sun. Pressure mounts for Sheriff Brady personally and professionally while she pursues a sadistic murderer into the shadows of the past to get to the roots of a monstrous obsession ... and expose the permanent wounds of a crime far worse than homicide.

All the creatures of the night gather in the Hollows of Cincinnati, to hide, to prowl, to party . . . and to feed.Vampires rule the darkness in a predator-eat-predator world rife with dangers beyond imagining and it's Rachel Morgan's job to keep that world civilized.A bounty hunter and witch with serious sex appeal and an attitude, she'll bring back alive, dead . . . or undead.

MeteorJS makes full-stack JavaScript Application Development simple – Learn how to build better modern web apps with MeteorJS, and become an expert in the innovative JavaScript framework About This Book Get your dream project up and running by building exceptional MeteorJS applications in a matter of days Learn how to integrate other JavaScript frameworks into your MeteorJS project and become an expert in full-stack development Go beyond coding and learn how to make modern design decisions – from mobile design to SEO – that drive great user experiences Who This Book Is For If you’ve already had some experience with MeteorJS but want to learn how to build even better modern web application, this book has been created for you. It provides you with a comprehensive look at one of those most important frameworks being used for the modern web today.What You Will Learn Get to grips with the basics and learn how to build a complete real-time application with MeteorJS Find out how Meteor makes full-stack development simple – become a better developer, fast. Use some of the most effective testing tools in modern web development to troubleshoot, debug and optimize your app Find out how to write custom packages for applications – so you can build your project exactly how you want Integrate React and Angular into your project Design and develop high quality animations that will give your UI the edge Build MeteorJS to serve as REST-based application and reactive system Learn how to host a MeteorJS application and then scale it for data Find out how MeteorJS can help you build for mobile Learn how to make sure you implement an effective SEO strategy in your MeteorJS application In Detail The web is dead – applications now rule our online experiences. But how are you going to build themWell, if you’ve been paying attention, you might already have tried your hand with MeteorJS, the JavaScript framework that helps you build complete full-stack web applications that are responsive and fast with ease. Mastering MeteorJS Application Development shows you how to do even more with MeteorJS – if you’re ready to try a comprehensive course through one of the most exciting frameworks in web development today, this is the book you need. Designed to take you through the entire process of building an advanced multipage application with Meteor, you’ll be able to bring your web development ideas with surprising ease. You’ll not only learn how Meteor makes web development easier, but also how you can make using Meteor easier, by automating and simplifying tasks so you can be confident you have full control of everything in your workflow – especially everything that could go wrong. From automated testing to integrating other useful frameworks such as Angular and D3, each chapter covers a crucial element in the Meteor development process. Discover how to integrate animations using Meteor’s Blaze, to give your UI designs the edge, and explore reactive programming to effectively harness RESTful systems in your projects. You will also learn how to deploy and scale your application, two crucial aspects of modern development and vital in a changing digital environment with users expecting a product and experience that delivers. With further insights on developing for mobile – and how Meteor can help you tackle the challenges of the trend – and details on incorporating SEO strategies into your application, this book isn’t just a code tutorial – it’s about creating a product that users love. Style and approach This book is a practical guide that teaches you different ways to create custom packages, efficient client and server code, and more using Meteor. This book is packed with perfect examples and explanations to help you understand the concepts. With the perfect mix of theory and practical experience, it will equip you to become a professional MeteorJS developer.

Over 60 recipes to help you create professional and exquisite UIs to make your games more immersive About This Book Design and develop interactive and professional user interfaces (UIs) for games in Unity Discover how to implement and deal with various in-game UI elements that will impress your players This practical recipe guide will help you to efficiently create powerful and remarkable UIs using C# code Who This Book Is For If you are a game developer with some experience in Unity and C# and want to create the best interactive experience fast and intuitively, then this book is for you. If you are an intermediate game developer or an expert, these recipes will help you bring out the power of the new UI Unity system. What You Will Learn Implement different kinds of counters and healthbars Deal with timers and find out how to format them Animate and vivify UI elements Handle runtime customizations Add complex Head-up displays (HUDs) Design and implement 3D UIs Integrate minimaps in the UI In Detail With the increasing interest in game development, it's essential to design and implement a UI that reflects the game settings and shows the right information to the player. The Unity system is used to create complex and aesthetically pleasing user interfaces in order to give a professional look and feel to a game. Although the new Unity UI system is powerful and quite easy to use, by integrating it with C# *s, it's possible to realize the potential of this system and bring an impressive UI to games.This guide is an invaluable collection of recipes if you are planning to use Unity to develop a game. Starting with the basic concepts of the UI components, we’ll take you all the way through to creating complex interfaces by including animations and dynamics elements. Based on real-world problems, these recipes will start by showing you how to make common UI elements such as counters and healthbars. You will then get a walkthrough of how to manage time using timers, and will learn how to format them. You will move on to decorating and animating the UI elements to vivify them and give them a professional touch. Furthermore, you will be guided into the 3D UI world and into HUD *ing. Finally, you will discover how to implement complex minimaps in the interface.Style and approach Interactive, easy-to-follow recipes will help you create and implement UIs that make gaming an exhilarating experience.

Make applications cross-communicate using Apache Thrift! About This Book Leverage Apache Thrift to enable applications written in different programming languages (Java, C++, Python, PHP, Ruby, and so on) to cross-communicate. Learn to make your services ready for real-world applications by using stepwise examples and modifying code from Industry giants. Be a crackerjack at solving Apache Thrift-related issues. Who This Book Is For If you have some experience of developing applications in one or more languages supported by Apache Thrift (C++, Java, PHP, Python, Ruby, and others) and want to broaden your knowledge and skills in building cross-platform, scalable applications, then this book is for you. What You Will Learn Understand the need for cross-language services and the basics of Apache Thrift. Learn how Apache Thrift works and what problems it solves. Determine when to use Apache Thrift instead of other methods (REST API), and when not to use it. Create and run an example application using Apache Thrift. Use Apache Thrift in your applications written in different languages supported by Apache Thrift (PHP, Python, Ruby, Java, and C++). Handle exceptions and deal with errors. Modify code in different languages.< Use Apache Thrift in the production environments of big applications. In Detail With modern software systems being increasingly complex, providing a scalable communication architecture for applications in different languages is tedious. The Apache Thrift framework is the solution to this problem! It helps build efficient and easy-to-maintain services and offers a plethora of options matching your application type by supporting several popular programming languages, including C++, Java, Python, PHP, Ruby, Erlang, Perl, Haskell, C#, Cocoa, JavaScript, Node.js, Smalltalk, OCaml, and Delphi. This book will help you set aside the basics of service-oriented systems through your first Apache Thrift-powered app. Then, progressing to more complex examples, it will provide you with tips for running large-scale applications in production environments. You will learn how to assess when Apache Thrift is the best tool to be used. To start with, you will run a simple example application, learning the framework's structure along the way; you will quickly advance to more complex systems that will help you solve various real-life problems. Moreover, you will be able to add a communication layer to every application written in one of the popular programming languages, with support for various data types and error handling. Further, you will learn how pre-eminent companies use Apache Thrift in their popular applications. This book is a great starting point if you want to use one of the best tools available to develop cross-language applications in service-oriented architectures. Style and approach A stepwise guide to learning Apache Thrift, with ready-to-run examples explained comprehensively. Advanced topics supply the inspiration for further work.

An effective guide to geographic information systems and remote sensing analysis using Python 3 About This Book Construct applications for GIS development by exploiting Python This focuses on built-in Python modules and libraries compatible with the Python Packaging Index distribution system—no compiling of C libraries necessary This practical, hands-on tutorial teaches you all about Geospatial analysis in Python Who This Book Is For If you are a Python developer, researcher, or analyst who wants to perform Geospatial, modeling, and GIS analysis with Python, then this book is for you. Familarity with digital mapping and analysis using Python or another *ing language for automation or crunching data manually is appreciated. What You Will Learn Automate Geospatial analysis workflows using Python Code the simplest possible GIS in 60 lines of Python Mold thematic maps with Python tools Get hold of the various forms that geospatial data comes in Produce elevation contours using Python tools Create flood inundation models Apply Geospatial analysis to find out about real-time data tracking and for storm chasing In Detail Geospatial Analysis is used in almost every field you can think of from medicine, to defense, to farming. This book will guide you gently into this exciting and complex field. It walks you through the building blocks of geospatial analysis and how to apply them to influence decision making using the latest Python software. Learning Geospatial Analysis with Python, 2nd Edition uses the expressive and powerful Python 3 programming language to guide you through geographic information systems, remote sensing, topography, and more, while providing a framework for you to approach geospatial analysis effectively, but on your own terms. We start by giving you a little background on the field, and a survey of the techniques and technology used. We then split the field into its component specialty areas: GIS, remote sensing, elevation data, advanced modeling, and real-time data. This book will teach you everything you need to know about, Geospatial Analysis from using a particular software package or API to using generic algorithms that can be applied. This book focuses on pure Python whenever possible to minimize compiling platform-dependent binaries, so that you don’t become bogged down in just getting ready to do analysis. This book will round out your technical library through handy recipes that will give you a good understanding of a field that supplements many a modern day human endeavors. Style and approach This is a practical, hands-on tutorial that teaches you all about Geospatial analysis interactively using Python.

The most dangerous road trip in history continues in the wacky third book of Dan Gutman's New York Times bestselling The Genius Files series, following twins Coke and Pepsi McDonald as they dodge nefarious villains all the way to Graceland. With the real-kid humor that has earned him millions of readers around the world, and featuring all new weird-but-true locations around America, this third book in the New York Times bestselling Genius Files series is one wild ride!The genius twins Coke and Pepsi have narrowly escaped a vat of a Spam, a pit of boiling fry oil, and a score of crazed adults all bent on killing them. But just when they thought they were safe, their arch nemesis Dr. Herman Warsaw reappeared, engaged to their Aunt Judy! Whoa—didn't he die already?! Now, as the twins continue their family road trip from Washington D.C. through the South, it will take every bit of their genius abilities to outwit their wacky enemies. It doesn't help that their parents remain totally oblivious! When they finally get to Graceland, Elvis's home in Memphis, Tennessee, Coke and Pepsi come to an explosive conclusion you'll have to read to believe!

For fans of Lemony Snicket’s Series of Unfortunate Events and Trenton Lee Stewart’s Mysterious Benedict Society comes the fourth book in the Incorrigible Children of Ashton Place, the acclaimed and hilarious Victorian mystery series by Maryrose Wood.In The Interrupted Tale, Miss Penelope Lumley receives an invitation to speak at the annual Celebrate Alumnae Knowledge Exposition (or CAKE) at the Swanburne Academy for Poor Bright Females. Optoomuchstic as ever, Penelope hopes to give her CAKE talk, see some old friends, and show off the Incorrigible children to Miss Mortimer, but instead she finds her beloved school in an uproar.And when Penelope is asked by the Swanburne Academy board of trustees to demonstrate the academic progress of her three wolfish students so the board can judge the true worth of a Swanburne education, the future of her alma mater—and of her job as governess to the Incorrigibles—hangs in the balance.

Kiss Me Again, the sequel to Rachel Vail's beloved contemporary teen romance If We Kiss, follows Charlie (Charlotte) Collins as she struggles with her feelings for her longtime crush Kevin Lazarus after their parents marry and he becomes her stepbrother. It was complicated enough when their parents were only dating and Kevin was going out with Charlie's best friend, Tess. Now, living under one roof, Charlie and Kevin are crossing paths and crossing lines, sneaking around at night and then sitting down to breakfast together as a family. It feels so crazy—exciting, confusing, impossible, and romantic. It can't last, not like this, but if anybody discovers their secret, everything could explode. . . . Praised for her wit and realism, award-winning author Rachel Vail delivers a poignant tale of first love and powerful kisses, at long last answering the question of what happens when a crush so off-limits it has to be fantasy suddenly becomes very real.

The race for survival comes to a thrilling conclusion in the heart-stopping finale to the Darkness Rising trilogy, from #1 New York Times bestselling author Kelley Armstrong.Things are getting desperate for Maya and her friends. Hunted by the powerful St. Clouds and now a rival Cabal as well, they're quickly running out of places to hide.All they have is the name and number of someone who might be able to give them a few answers. Answers to why they're so valuable, and why their supernatural powers are getting more and more out of control. But Maya is unprepared for the truths that await her. And like it or not, she'll have to face down some demons from her past if she ever hopes to move on with her life. Because Maya can't keep running forever.With all the twists, thrills, and romance that have made Kelley Armstrong an international bestseller, plus the surprising return of some fan-favorite characters, The Rising will hold you under its spell long after its breathtaking end.

Enter the magical land of Story in this sequel to Storybound, perfect for fans of Inkheart, The School for Good and Evil, and classic fantasy tales like Ella Enchanted and The Neverending Story. Kids who love fairy tales, dragons, magic, and more will be enchanted by Una Fairchild's unforgettable adventure in Story's End.Story is a land of dashing Heroes, dastardly Villains, and epic quests—and once upon a time, a noble King. But the King vanished so long ago that even the memory of him is lost. Now a cruel Enemy plots to rewrite Story's future, and an ordinary girl named Una Fairchild may be the only one who can stop him. As Una and her friends Peter and Indy race to defeat the Enemy, their quest will take them deep into the secrets of Story's past . . . and Una's own mysterious ties to this fairy-tale kingdom and its long-forgotten King.Discover the richly imagined world, spirited cast of storybook characters, and timeless appeal of Story's End, which closes the book on Una's adventure "with an all-out bang" (ALA Booklist).

Franny's supposed to be working this summer, not flirting. But you can't blame her when guys like Alex and Harry are around. . . . Franny Pearson never dreamed she'd be attending the prestigious Mansfield Summer Theater Program. And she's not, exactly. She's working for her aunt, the resident costume designer. But sewing her fingers to the bone does give her an opportunity to spend time with her crush, Alex Braverman. If only he were as taken with the girl hemming his trousers as he is with his new leading lady.When Harry Cartwright, a notorious flirt, shows more than a friendly interest in Franny, she figures it can't hurt to have a little fun. But as their breezy romance grows more complicated, can Franny keep pretending that Harry is just a carefree flingAnd why is Alex suddenly giving her those deep, meaningful looksIn this charming tale of mixed messages and romantic near-misses, one thing is clear: Flirting might be more trouble than Franny ever expected.

M. T. Anderson meets Cory Doctorow in this teen debut from #1 New York Times bestseller Sean Williams, who also coauthors the Troubletwisters series with Garth Nix.When a coded note promises improvement—the chance to change your body any way you want, making it stronger, taller, more beautiful—Clair thinks it's too good to be true, but her best friend, Libby, falls into a deadly trap.With the help of the school freak and a mysterious stranger, Clair races against the clock and around the world to save Libby, even as every step draws her deeper into a deadly world of cover-ups and conspiracies.Action and danger fuel this near-future tale of technology, identity, and the lengths one girl will go to save her best friend.