An infamous visual that proved hugely influential, with a whole spate of cat-featuring posters immediately popping up throughout the '40s following its release, including: The Curse of The Cat People (a semi-sequel to Cat People), The Creeper, The Catman of Paris and The Cat Creeps. None had quite the same impact or dark ominous edge that this 1942 artwork emanated.
Honourable Mentions: House of Frankenstein, House of Horrors