Dead Men Walk [1943] @ avi

During the funeral service of Elwyn, the local Kate accuses him of evilness. Later, his brother Dr. Lloyd Clayton and tutor of his niece Gayle Clayton tells her and her fiance Dr. David Bently that his brother has become obsessed by mysticism and black magic since he traveled to India. During the night, Elwyn comes to Dr. Lloyd Clayton's house and accuses Dr. Clayton of pushing him off a cliff to die. Further, he tells Dr. Clayton that he will take revenge, slowly killing Gayle and transforming her in a vampire. Dr. Clayton does not believe in what he has seen and heard, but when Gayle gets mysteriously sick and Dr. Clayton becomes the prime suspect of David and the locals, he finally accepts that his brother is a vampire and tries to find his coffin to destroy him.