"Behind the Green Door" is a 1972 adult film directed by Artie and Jim Buckley. It is notable for being one of the first mainstream adult films to gain significant attention, featuring a blend of eroticism and a narrative structure. The film follows a woman named Marilyn who mysteriously disappears and is later found in a secretive club where she experiences various sexual encounters. The film is recognized for its artistic approach and production quality, setting it apart from many other adult films of its time. It features a mix of fantasy and reality, exploring themes of desire and liberation, and has since become a cult classic in the adult film genre.