The movie is centered around Lori, a 16 year old girl who lives with her mother her mothers' boyfriend, and Eric Komenko, an 18 year old boy who has killed his parents. Komenko frequently gets a visit from Cristofuoro, the detective who arrested Eric for the murder on his parents. Cristofuoro is convinced Komenko is a psychopath, and that he will kill again. After Eric is released from juvenile penitentiary, he goes to live with his aunt. His release causes some media attention, and Lori tries to seek out Eric at his home. Lori gets in the back of Eric's car to seek shelter from rain and she falls asleep.

When he leaves for the weekend to meet another girl in an amusement park, Lori pops up from under a blanket while Eric is driving. The scare and near accident which follows cause a bit of a situation with the police, so Lori gets to move to the front seat. Reluctantly Eric allows Lori to come along with him. From time to time he still feels the urge to kill, but partly by keeping this under control, partly by chance, nobody gets hurt.

Cristofuoro tries to find Eric in order to trap him before he makes a major mistake. When Eric and Lori make a boat trip, Lori commits suicide by allowing herself to fall into the water while not being able to swim. Eric tries to save her without success. Cristofuoro arrests him. After Eric's explanation he agrees that Eric did not kill Lori, but since Cristofuoro realizes that Eric is still dangerous anyway, he uses the opportunity to have him locked up again.

It is revealed in the end that Lori saw Eric dip the death girl in the lake.