Also, how about The Black Cat? (1934, dir. Edgar G. Ulmer). Pre-Code horror starring Lugosi and Karloff. It sorta answers the question: what if David Lynch was directing contract players in 1930s Hollywood?
I remember almost nothing of this movie since I last saw it on the afternoon "Creature Feature" TV show in the early 1970s, but the scene when an eyeball appears on the main character's shoulder scared the crap out of me as a wee tyke.
Do you really want me to start spewing, Snow Goon? I'm kind of a massive 50's SF movie fan, familiar with almost anything mainstream (or not so much) in that period, some of which is pretty obscure by modern standards. Worst I'll do is conflate some early 60's cases that I remember as B&W that were color, and I never mind being pointed out when I'm being an idjit.