She doesn't speak, but her silence says everything. He's a profiler who can read anyone but himself. When little Maddie's fragile heart begins to fail, Elias Carter must face the one case he can't solve-with his team standing beside him and hope hanging by a thread.

When the BAU is called to investigate a string of brutal family murders, one discovery changes everything - a five-year-old girl, Lila Grace, found alive at the latest scene. As Agent Derek Morgan earns the frightened child's trust, the team uncovers a chilling pattern linking each victim to the same adoption agency. What begins as a manhunt for a serial killer turns into something darker - a web of manipulation, exploitation, and betrayal hiding behind smiling family portraits. While the team races to find the man responsible, Morgan becomes Lila's protector and anchor, the one person she'll speak to about the horrors she can't forget. But the closer they get to the truth, the more they realize: the monster they're hunting has been watching all along.