Season 5 Episode 5 - The Post-Modern Prometheus 

Filmed in glorious black and white with a comic book feel to it, this is a modern retelling of Frankenstein as Mulder and Scully get caught up in a town where the residents fear a two-faced monster who has been impregnating the women.
Keywords: x-files, scully, mulder, full episode, season 5, episode 5, the post-modern prometheus, 5x05