What if your best friend were working with your worst enemy? All is not well in Bridges. The Four Families accuse each other of spying while Red Dog attacks escalate. Aristocratic jewel merchant Dame Anastasia Louis, styling herself "The Queen of Diamonds," hires her long-time friend, private eye Jacqueline Spadros, to collect from her debtors so she can leave the city. But Jacqui can't leave David Bryce's kidnapping and the murders of her teenage informants unpunished. Convinced that her mortal enemy, the madman "Black Jack" Diamond, was complicit in the crimes, she pursues ways to prove it. The scoundrel and his crew, however, seem to be one step ahead: the terrifying man in white is seen outside David's home, forged letters are appearing across the city, and merchants in the Spadros quadrant report threats from a man who fits his description.? ? Jacqui is warned of a plot against her life. Those who try to warn Jacqui are murdered, and evidence emerges that Jacqui's mother is next on the list.? With time running out, Jacqui is forced to make a horrifying choice. Someone will surely die. Will it be Jacqui, or her mother?