Night Creatures/Captain Clegg (1962) | HORROR | FULL MOVIE

Captian Collier arrives in and English coastal town with his band of navy men to investigate reports of illegal smuggling and bootlegging, only to find that he must also investigate reports of "Marsh Phantoms," being said to ride on phantom horses through the marshes spreading terror to any who encounter them. The Captian suspects that the local vicar is hiding something as well.

IMDb: https://www.imdb.com/title/tt0056277