The Vampire

After inadvertently taking pills made from vampire bat blood, Dr. Paul Beecher (John Beal) undergoes a mysterious transformation in this classic horror flick. His instant addiction forces Beecher to take a pill every day, turning him into a hirsute maniac prone to homicidal rampages. As police investigate the murders, Beecher — who only remembers his actions as hazy dreams — begins to suspect himself.