April 1971. When DI Webb and DS Raymond arrive at Harpur's Mews in response to a call, Susan Lang is lying on the ground, bleeding to death. Her husband Henry is sitting nearby, holding a blood-stained knife. Henry claims to have no memory of the events that led to his wife's death, leaving Ben Schroeder little to defend a potential murder charge. Unknown to his strict Baptist wife Deborah, Justice Conrad Rainer has a secret life as a high-stakes gambler. He has already raided his own and Deborah's resources, and now he has crossed a line—one from which there is no return. To his horror, as Henry Lang's trial starts, Conrad discovers a sinister connection between the trial and his gambling debts. Both Henry and Conrad's lives are on the line, and time is running out.