Psychologically (literally) intense mystery.

Rating: 9/10 (27 June 2017)

This is a great movie. It gradually builds over the first 90% of the movie, culminating in the single great revelation of our protagonist's identity. It's a twist but not an annoying late-in-movie transformation of the plot. It feels more like when you're stumbling over a riddle and someone just tells you the answer. It is both satisfying and shocking.
It is atmospheric, and the combination of the effects and music brought me to Shutter Island with terrifying effectiveness. Leonardo DiCaprio does a good job, but the real star to me was the initially worrying then comforting role of Ben Kingsley as a doctor on the island.