A group of stage actors lock themselves in the theater for a rehearsal of their upcoming musical production, unaware that an escaped psychopath has sneaked into the theater with them.A group of stage actors lock themselves in the theater for a rehearsal of their upcoming musical production, unaware that an escaped psychopath has sneaked into the theater with them.A group of stage actors lock themselves in the theater for a rehearsal of their upcoming musical production, unaware that an escaped psychopath has sneaked into the theater with them.