The Vampire Bat

The Vampire Bat 1933 is an American PreCode horror film starring Lionel Atwill, Fay Wray, Melvyn Douglas, and Dwight Frye.

Dr. von Niemann returns to his home, which also houses Breettschneiders love Ruth Bertin, Ruths hypochondriac aunt Gussie Schnappmann, and servants Emil Borst, and Gorgiana. Fear of the vampire and suspicion of Glieb quickly spreads around the town, and people start fearing him. Ms Mueller is killed that night. The analyses of Dr. von Niemann and another doctor, Dr. Haupt, conclude that the death is the same as all of the previous deaths blood loss, with two punctures in the neck caused by needle sharp teeth. Gleib enters the examination and upon seeing the dead body, runs away screaming.Next morning, Glieb enters Dr. von Niemanns garden, where Dr. von Niemann, Breettschneider, and Bertin are discussing vampires inside the house. The town fathers enter the house and announce that Kringen is dead and Gleib missing. An angry mob hunts down Gleib and chases him through the countryside and into a cave, where he falls to his death. ........

Source: Wikipedia