A string of gruesome murders has the city on edge, with each crime more disturbing than the last. As the body count rises, Detective Iris Williams and her partner, Annette Toni, uncover a chilling pattern: every killer shares one mysterious connection. Someone is manipulating ordinary people into committing acts of unimaginable violence?and always staying one step ahead of the investigation.

The deeper Iris and Annette dig, the more they realize they're hunting a mastermind who doesn't need weapons to kill. Their greatest weapon is the human mind.

But when the detectives finally uncover the shocking truth, they come face-to-face with Dr. Sara Weil, a celebrated psychiatrist whose brilliant reputation conceals a terrifying secret. She has spent years turning her patients into unwitting murderers, leaving no evidence that points back to her.

Now, as Sara sets her sights on Iris and Annette, the detectives must stop a killer who can manipulate minds as easily as pulling a trigger?before they become her next victims.