Mark of the Vampire

In this 1935 horror film, a series of gruesome murders in Prague sets off a chain reaction of events that brings together unlikely allies in their quest to uncover the truth behind the killings. A prominent resident's body is discovered with tiny bite wounds on his neck, leading many to suspect Count Mora and his daughter Luna as the perpetrators. Professor Zelen, an expert in the occult, joins forces with Irena Borotyn, who is being targeted by the vampires, to unravel the mystery.