Before I Hang
Beware! When Karloff stops the clock, your hour has come!
9/17/1940
Imdb: tt0032245
Tmdb: 26923
Popularity: 7.077
Vote: 6.2/10 (33)

A physician on death row for a mercy killing is allowed to experiment on a serum using a criminals' blood, but secretly tests it on himself. He gets a pardon, but finds out he's become a Jekyll-&-Hyde.