Abbott and Costello Meet the Invisible Man (1951)
Two bumbling private eyes help a man, wrongly accused of murder who has become invisible, to clear his name
The Brasher Doubloon (1947)
Detective Philip Marlowe encounters a variety of characters while checking on why Leslie Murdock stole a rare doubloon from his mother
Black Magic (1949)
Hypnotist uses his powers for revenge against King Louis XVs court