A quartet of murderous psychopaths break out of a mental hospital during a power blackout and lay siege to their doctor's house.
Masada Productions, New Line Cinema
English
$1,000,000
Jack Palance
Frank Hawkes
Donald Pleasence
Leo Bain
Martin Landau
Byron "Preacher" Sutcliff
Dwight Schultz
Dan Potter
Erland van Lidth
Ronald "Fatty" Elster
Deborah Hedwall
Nell Potter
Lee Taylor-Allan
Toni Potter
Phillip Clark
Tom Smith / Skaggs
Elizabeth Ward
Lyla Potter
Brent Jennings
Ray Curtis
Gordon Watkins
Detective Burnett
Carol Levy
Bunky