A vampiric/satanist cult is loose in Brittany & Britain in the mid-60s

While on vacation in Brittany, a Brit (William Sylvester) runs afoul of a vampire lord named Sinistre (Hubert Noël) and his gypsy bride (Carole Gray). Sinistre & his cult pursue Paul (Sylvester) because he runs off with the Count’s golden bat talisman. Diana Decker plays the socialite owner of an oddity shop while Tracy Reed is on hand as Paul’s new girlfriend who catches the eye of Sinistre.

“Devils of Darkness” (1965) was made by Planet Film Productions, a minor rival of Hammer, and therefore has that Hammer... read the rest.