Devil's sorcery, as a dead man returns for vengeance!
If only Bela Lugosi had been in this one! Alas, it's George Zucco playing the dual roles of the evil and kindly twins – he does fine as the kindly brother, but as the evil brother he just isn't convincing as a vampiric menace.
The premise is that the evil brother has died, the local lunatic says his evil still lives, the evil brother's servant believes the good twin is responsible for his death, and strange things begin to happen…
There's also a posse of concerned civilians who seem to have wandered in from a Western.
Dwight Frye is memorable as always as the evil servant, but doesn't get enough screen time. The "future son in law" character is both wooden and distracting (giant adam's apple!).
With some thought, however, I think the final scene could be the inspiration for an interesting wargame scenario: You've got vampire, vampire hunters, a mob, and fire!
Alas, this makes the film sound more exciting than it is… for a vampire movie, this one is pretty placid.