When the story begins, Dr. Dan Potter (Dwight Schultz) arrives at a psychiatric hospital to begin his new job. The place is run by Dr. Bain (Donald Pleasance) and he seems, at times, to be as weird as the inmates. His relationship with the patients sure reminded me of the Poe story "The System of Doctor Tarr and Professor Fether" and the movie based on it, "Stonehurst Asylum". But the story goes a different direction. There is a huge power outage and the security system at the hospital goes out...and the inmates find the alarms and doors no longer function properly. Soon a group of dangerous psychotics leave to go on a killing spree...all the while Dr. Bain seems amazingly chill. What's next??
This is a slasher film at heart, but it has more depth and more story to it than a Friday 13 or Halloween-type movie. It also helps that there was an impressive cast--with Jack Palance and Martin Landau playing two of the super-dangerous psychotic escapees. Now this does NOT mean the film is especially brilliant, as like other films in the genre, it has some cliches--such as the identity of the fourth slasher as well as how the psychotics all attack one at a time instead of at once (thus making them easier to beat).
By the way, although Dwight Schultz is not a household name, Star Trek fans will likely recognize him as the extremely nervous and geeky Lt. Broccoli.