Half Man, Half Bat, All Terror! When Dr. John Beck (Stewart Moss) and his wife Cathy (Marianne McAndrew) fall into an underground cave, a huge bat attacks them, biting the good doctor. Thinking it's only a scratch, Beck avoids treatment, and soon wakes to find himself transformed into a horrifying man-bat creature! Now one with the night, Beck embarks on a killing spree to conceal what he's become, and he won't stop until he once again has the one thing his new existence is missing...his beautiful wife!