Messiah of Evil (1973) (repost)

A young woman goes searching for her missing artist father. Her journey takes her to a strange Californian seaside town governed by a mysterious undead cult.

Directors:

 Willard Huyck, Gloria Katz (uncredited)

Writers:

 Willard Huyck (screenplay), Gloria Katz(screenplay)

Stars:

 Michael Greer, Marianna Hill, Joy Bang - via IMDB 

https://archive.org/details/MessiahofEvil_avi