6.1 / 10
3
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.
Don Beddoe
Capt. McGraw
Frank Richards
Otto Kron - Convict
Edward Earle
Dr. Nichols
Edward Van Sloan
Dr. Ralph Howard