Nick Grinde directs Boris Karloff for the third time in a familiar-sounding tale of Dr. John Garth, who was sentenced to death for a mercy killing, who nonetheless is allowed by the prison warden to experiment with his serum using the blood of an executed murderer. Garth uses it on himself however, and it proves a success, but has the unfortunate side-effect of periodically turning him into a killer. After one such murder(which is blamed on an escaped inmate) he is pardoned, but that doesn't stop his lapses into murder, as he decides to help some doctors with his serum, but that plan backfires. Standard thriller has a good performance from Boris, but that's all. Seen this done before, and better.
Review of Before I Hang
