Worth a look

Rating: 7/10 (3 July 2012)

Other reviewers have mentioned The Cabinet of Dr Caligari to which I would add Marat/Sade and One Flew Over the Cuckoos Nest as exploration pieces into insanity.
But despite its flaws and plot holes, I found Shutter Island to be a worthwhile piece of entertainment, if you go along for the ride.
Leo does a good job, and I am not his biggest fan, and the Nazi connection, apparently a figment of his imagination makes sense when you put it into the context of his insanity and the role played by Max von Sydow.
This is not going to be everyones cup of tea but if it is treated with respect and if not over analysed, it does actually work quite well. It is technically well done, generally well acted and for me at least, was quite suspenseful most of the way.
I think critics who have dismissed it are being harsh, but I also think its fundamental flaws stop it being a 9 or 10. Recommended.