Federal agent Alexis Parker wakes up covered in blood and stranded outside a parking garage. She has no idea where she is or how she got there. But one thing is clear; she has to find out what happened.

When she starts having disturbing dreams, Alex begins to question if she's the victim or the killer. The flash of the muzzle, the body slumping forward in the chair, and her screams are the only things she remembers clearly. She has to find the crime scene. She has to find the body. She has to remember how she ended up in a dark room with a red light.

The clues lead to an even more disturbing conclusion. The dead man in her dreams is a cop, and the gun used to kill him is hers. Now the police want her for murder. But what she learns while in custody changes everything. No one is safe, and unless she does something to stop it, the real killer is just getting started.