What is the relevance of the word "Shutter" in the movie title "Shutter Island"? How does it connect to the movie?
It is nothing more than just the name of the island where the story takes place - Shutter Island (in Boston harbour). The island is fictional; Dennis Lehane (the author of the Shutter Island novel, on which the film is based) was inspired by the hospital and grounds on Long Island in Boston Harbor.
I read it in one of the discussion forums on this movie. One of the comments presented a few interesting anagrams of the movie's title (Shutter Island) -
- Truths Denials
- Truths and Lies
- Daniel's truths
Of course, most probably this is just an interesting play on the title by one of the viewers but given the important part that anagrams have played in this movie, I see (although tiny) a probability that the title may have an anagramical reason as well.