Before I Hang (1940)
Overview : 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.
Release Date : September 17, 1940
Runtime : 62m
Genre : Crime, Horror, Science Fiction
Companies : Columbia Pictures
Countries : United States of America
Keywords : experiment, mad scientist, murder, doctor, pianist, pardon, split personality, anti-aging, mercy killing, convicted murderer, youth serum