Prisoners battle each other -- and the police -- when they escape the Colorado State Penitentiary.
Scott Brady
as Sherbondy
Jeff Corey
as Schwartzmiller
Whit Bissell
as Heilman
Stanley Clements
as New
Charles Russell
as Tolley
DeForest Kelley
as Smalley
Ralph Byrd
as Officer Gray
Mabel Paige
as Mrs. Oliver
Roy Best
as Himself (as Warden Roy Best)
