Watch as mad scientist Dr. Lorenzo Cameron turns his handyman into a werewolf in this clip from the 1942 low-budget horror film The Mad Monster. It stars Johnny Downs, George Zucco, and Anne Nagel. The tagline for this film is "The blood of a wolf he placed in the veins of a man… and created a monster such as the world has never known!". It was released on May 15, 1942.
Found on retroyoutube