Dead Men Walk / The Monster Maker

In Dead Men Walk, a dismembered head tells a strange tale about a good man's brother who's an evil vampire (both characters are played by George Zucco). In The Monster Maker, when a mad scientist asks a pianist for his daughter's hand and is refused, he turns the pianist into a monster. Here's the caveat: He'll change the pianist back to his human form -- if he gets the daughter.