After taking a picture of a woman on the street, amateur photographer Hollis is shocked when she knocks on his apartment door and threatens his life. Demanding that he and the photograph must leave town with her or she will have to kill him, Hollis reluctantly obliges. While on the run, she reveals she's an ex-MI5 agent that double-crossed a Colombian Cartel. Just as she was about to escape for good, Hollis' photograph of her surfaced and now the Cartel knows her whereabouts, and his.

The scientist Diana Purlow is performing experiments with the mind of criminals sentenced to death in the prison of the sadistic warden Earl Blakely. She tests an apparatus she developed and capable of read minds in a man that claims to be innocent of a murder, but she is not able to convince her former lover and Governor to call off the execution. When the serial killer Jesse Mowatt is arrested and sentenced to death, she convinces the warden to submit Jesse to her experiment. While working with the murderer, Diana faces pure evil in its essence.