A brutal murder casts suspicion on a London therapy group in this thriller from the author of The Bones Beneath: “One of my favorite new writers” (Harlan Coben).   Every Monday evening, six people gather in a smart North London house to talk about shame. Among them are a grieving surgeon, a betrayed housewife, a taunting gay model, a barely recovered heroin addict. All they have in common is a history of pain and compulsions—until they’re linked by the brutal murder of one of their members. Det. Inspector Nicola Tanner is drawn into this intimate circle to find the killer. Unfortunately, not a single one of them is willing to share.   Now it’s up to Tanner to delve into their pasts on her own. But what secret could be so shameful as to kill for it? Or die for it? And how can she possibly find the truth when lies and denial are second nature to her suspects?   From British thriller master Mark Billingham comes “one of the best crime novels of the year . . . Shocking, frightening, gripping” (The Independent).   “Billingham is one of the most consistently entertaining, insightful crime writers working today.” —Gillian Flynn, author of Gone Girl   “Keeps the reader guessing, and second-guessing.” —Tampa Bay Times