When her identical twin sister goes out of town, a bored and sexually frustrated woman adopts her sibling's promiscuous identity, but soon finds herself involved in a murder case.

A beautiful redhead, named Kaitlin, seeking to get away from her boring life and her uncommunicative husband Jeffrey, assumes the identity of her outgoing, blond, identical twin sister, Shauna, when she leaves town and Kaitlin soon becomes embroiled with a psychotic serial killer who is stalking Shauna.