After learning that the blood of her servants keeps her skin looking fresh and gorgeous, Countess Erzsebet Bathory (Lucia Bosé) enlists the aid of her husband, Karl (Espartaco Santoni), to murder nubile girls and snatch their blood. But one comely lass, an innkeeper’s daughter named Marina (Ewa Aulin), ends up snatching Karl’s affections in this gory chiller from Spanish cult auteur Jorge Grau.
Jorge Grau (born Jorge Grau Solá, 27 October 1930) is a Spanish director, scriptwriter, playwright and painter. In 1973, he directed Bloody Ceremony (aka Legend of Blood Castle, aka The Female Butcher). In 1974, he directed his horror masterpiece, The Living Dead at the Manchester Morgue (aka Let Sleeping Corpses Lie, aka Don’t Open the Window.) —Wikipedia
I'd recommend it on the basis of Ewa Aulin with dark hair alone but the real treat is Jorge Grau turning what was routinely rote into something multi-layered and fascinating, as he did with Manchester Morgue. A better print is needed to appreciate the design, but his critique of law & order (clearly Spanish, no matter the setting) and royal decadence are bold and horrific. The trial sequences are genius.