Trivia: Shutter Island
- Actor Allusion: Leonardo DiCaprio feels uneasy on a ship. Bad memories, perhaps? Additionally, the actor's mother is German.
- Fake American: British actress Emily Mortimer as American Rachel Solando
- Hey, It's That Guy!:
- Jack Dawson/Dom Cobb and Stan/Bruce Banner are investigating an insane asylum run by Xavier Finch/The Mandarin, where Antonius Block works. Oh, and Rorschach is also an inmate.
- Casey Jones is a mad arsonist. He used to be a former priest turned Los Angeles homicide detective. And he shot Dr. House. And he made a clock that runs backwards.
- Buffalo Bill/Sinestro/Captain Stottlemeyer sans mustache is also the very disturbing Warden.
- Most of the main asylum workers are played by actors well known for their roles in horror movies or movies about killers. It creates a subconsciously uncomfortable feeling for the audience.