This is the groundbreaking "women behind bars" actioner that became a drive-in classic! When the desperate, abused inmates of an all-female prison rebel against the sadistic warden and his guards, all heck breaks loose! Pam Grier (who also sings the theme song), Judith M. Brown, Roberta Collins, Brooke Mills, Pat Woodell, Christiane Schmidtmer, and Sid Haig star.