In 1953, United Production Artists produced an 8-minute animation based on Edgar Allan Poe’s The Tell-Tale Heart. This surreal psychological horror short film, narrated by James Mason and distributed by Columbia Pictures, became the first animated film to earn an X rating in the UK. The reason? Well, that’s just what old stuffy white dudes do when someone makes a film about killing old stuffy white dudes for no reason.

Click here for more information on The Tell-Tale Heart from 1953.