Scream Bloody Murder (1973)

A disturbed boy kills his father with his farm tractor and his arm is mangled in the process. He's taken to a mental hospital where he's outfitted with a hook to replace his lost hand and, ... See full summary »

Director:

 Marc B. Ray

Writers:

 Larry Alexander (screenplay), Marc B. Ray(screenplay)

Stars:

 Fred Holbert, Leigh Mitchell, Robert Knox - via IMDB 

https://archive.org/details/ScreamBloodyMurder