Doctor Dracula (1974/1978/1981?, Al Adamson, Paul Aratow)
Started life as
Lucifer's Women apparently.
John Carradine heads a cult and need I say more?

A dour wee thing tbh. A chap seems to believe he is the reincarnation of Svengali so naturally hooks up with a girl called Trilby

Quite domestic in places, this reminded me a lot of
Nurse Sherri, but don't ask me why, similar vibe possibly.