Scream of the Demon Lover (1970) is a well executed Spanish-Italian gothic horror/gothic romance movie. It has the right gothic look, it has energy and flair, some nudity and plenty of hints of strange sexual kinks. Plus a mad scientist. Bliss!
My review: https://princeplanetmovies.blogspot.com/2024/05/scream-of-demon-lover-1970.html