Shutter Island is a really fascinating, thought-through movie, but one thing never made sense to me when rewatching it, knowing the twist.
How did they manage to get everyone to play along?
With the guards, orderlies and doctors it seems believable, but what motivation would the patients have to pretend that Teddy is a U.S. Marshall?
Of course there are a lot of signs that something is wrong, like
- the guards being very cautious around him
- the patients greeting him or talking behind his back
- the note "run" etc.
But apart from George Noyce nobody seems to really tell him whats going on. How would they get mentally ill (!) patients to take place in a rather convincing play about an escaped woman, and how did they manage to make a delusional woman pretend she was Rachel Solando?