PRC (1940)
BW 69 minutes

After being cheated out of years of patent royalties, cosmetic chemist Dr. Paul Carruthers (Lugosi) exacts bloody revenge on company management. From his secret lab, he dispatches his controlled, giant vampire bat, letting his pent-up angry loose on those responsible for his meager income.

Staring Bela Lugosi, Suzanne Kaaren, and Dave O’Brien
Produced by Jack Gallagher and directed by Jean Yarbrough