The Gorgon 1964-Peter Cushing, Christopher Lee-IMDB 6.4/10

In early-twentieth-century middle-Europe, villagers are literally becoming petrified. Although the authorities try to hush the matter up, it is apparent that, at the full moon, Megaera, a Gorgon, leaves her castle lair, and anyone looking at her face is turned to stone. When this fate befalls a visitor, experts from the University of Leipzig arrive to try to get to the bottom of it all.