Angelina Jolie plays the FBI agent Illeana Scott, who is sent to Montreal to assist in the investigation of a murder.
The agent Scott he traces a profile of the murderer, who turns out to be a somewhat eccentric person, developing the theory that he adopts the lives and personalities of his victims.
He goes to the scene of the crime, lies back in the position in which the victim was found and discovers clues that the police had not noticed.
When the murderer commits another crime, a witness appears, the artist Coast (Ethan hawke) that an identikit can perform.
This was the clue they needed, but the agent Scott She feels an unexpected attraction for the witness and unleashes a complicated love affair that takes her away from the case.
Suddenly she finds herself engulfed in a complicated and terrifying journey, surrounded by suspects, in a case that has become hair-raising personal.