Psychologist Arles Shepherd treats troubled children, struggling with each case to recover from her own traumatic past, much of which she's lost to the shadows of memory. Having just set up a new kind of treatment center in the remote Adirondack wilderness, Arles longs to heal one patient in particular: a ten-year-old boy who has never spoken a word--or so his mother, Louise, believes. Hundreds of miles away, Cass Monroe is living a parent's worst nightmare. His twelve-year-old daughter has vanished on her way home from school. With no clues, no witnesses, and no trail, the police are at a dead end. Fighting a heart that was already ailing, and struggling to keep both his marriage and himself alive, Cass turns to a pair of true-crime podcasters for help. Arles, Louise, and Cass will soon find their lives entangled in ways none of them could have anticipated. And when the collision occurs, a quarter-century-old secret will be forced out of hiding. Because nothing screams louder than silence.