When the lights go out, the terror begins.
A quartet of murderous psychopaths break out of a mental hospital during a power blackout and lay siege to their doctor's house.
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5.8/10Rating on TMDBFrom The Movie Database177 votes
Jack PalanceFrank Hawkes
Donald PleasenceLeo Bain
Martin LandauByron "Preacher" Sutcliff
Dwight SchultzDan Potter
Erland van LidthRonald "Fatty" Elster
Deborah HedwallNell PotterLee Taylor-AllanToni Potter
Phillip ClarkTom Smith / SkaggsElizabeth WardLyla Potter
Brent JenningsRay Curtis
Gordon WatkinsDetective Burnett
Carol LevyBunky
Keith ReddinBilly
Annie KorzenMarissa Hall
Lin ShayeReceptionist at Haven
