From New York Times bestselling author Peter Robinson comes this mesmerizing story-within-a-story--that will thrill his fans and bring him many new readers. A distraught woman arrives at the Eastvale police station desperate to speak to Detective Chief Inspector Alan Banks. But Banks is abroad, and the woman's revelation of a loaded gun hidden in her daughter Erin's bedroom leads to a shocking fatality when a police armed-response team breaks into her house. The fallout will have dark consequences for Banks and his partner, DI Annie Cabbot. It turns out that Erin's best friend is Banks' own daughter, Tracy . . . who was last seen in the company of the weapon's actual owner, a very bad boy indeed. Now that his child is on the run with a psychopath, Banks finds himself caught in a bloody tangle of betrayal and murder. But the rogue DCI is a bit of a bad boy himself, and he'll freely risk his life and career in the cause of love--and vengeance. Thrilling, harrowing, and utterly compelling, Bad Boy showcases Peter Robinson's masterful writing.