Cage Without a Key

It Preys On Human Fear. It Feeds On Human Flesh.

A high school girl who needs a ride accepts one from a boy she doesn't know. He then forces her to participate in a robbery, in which a clerk is killed. They are soon caught, and the girl, despite her protestations of innocence, is convicted of first-degree murder and sent to prison. Once she gets there, she finds out that her troubles are just beginning.