Sex. Murder. Blackmail. There's a first time for everything.
A rebellious girl hooks up with an escort agency where her stepfather is a client.
Desperate to be free from her drunken, unloving mother Diane, the beautiful, scheming young Mini seduces her stepfather Martin and soon convinces him to join her in a sadistic scheme to have Diane declared insane. But their conspiracy soon escalates to murder and when John Garson, a young detective starts investigating, Martin and Mini begin to turn on each other.
