William J. Kulzer

A former female cop is framed by corrupt police, acting in collusion with the local judge, and has to fight her way out of the pen, alone, against tough inmates, and the people in charge. (imdb)

More trash from Troma!

Detective Sergeant Rydell King gets saddled with a mysterious case -- and it's a doozy, to say the least. Three college girls are found bludgeoned to death by a psychotic murderer, and after some elementary sleuthing, King discovers that the girls were part of a group of friends only one of whom is still alive.