I saw Shutter Island yesterday.It was based on a book which I have not read, all I knew going into it was that it was directed by Martin Scorsese and was a thriller.After watching it, I can say that this is an excellent film.This film is a bit different from director Martin Scorsese's previous films, the majority of which involved the mafia and criminal activity(Mean Streets, Goodfellas, The Departed, etc).Shutter Island is a story about two field marshals who investigate the disappearance of a mental patient from the secluded "shutter island", a place where the most dangerous mental patients reside.One of the field marshals(played by Leonardo Di Caprio) was a World War 2 veteran who experienced a few horrors as he was there.His wife was also killed in a fire a few years back.After some investigating, him and his partner feel that there is something wrong about the practises that go on at the island, and they set out to investigate that.Shutter Island is filled with various surprising twists and suspenseful scenes. The film definitely feels much shorter than 2hrs 20min.The acting is also top notch.If you are a fan of suspense, you owe it to yourself to go check out Shutter Island.