Snow falls softly outside Molly Bradley's home on a frigid January night. Inside, half a dozen close friends are gathered to celebrate the fortieth birthday of Molly's psychologist husband, Jay. Candlelight gleams against dark wood, wine flows, and the house rings with laughter. Everybody loves Jay, Molly most of all. Yet next morning, Molly discovers Jay dead on the floor of his office, his throat brutally slashed. After decades working with the Boston PD, Detective Rita Myers has grown accustomed to the banality of evil-the murders that make no sense beyond bad luck or a tragic brush with the worst of humanity. But Jay Bradley's murder isn't random, or a mere crime of opportunity. Rita is convinced that someone in the couple's small circle killed him. Someone who was celebrating with them that night. Devastated, Molly tries to make sense of her husband's death. Jay was her rock, the only person who really understood the nightmare she lived through long ago. He knew the horrors she's kept hidden even from her friends. But shocking revelations are making her question if Jay was all he seemed to be-and whether someone else knows her past too. And until Molly figures out who she can really trust, she won't be able to stop herself becoming the next target . . .