Martin Scorsese's newest film, Shutter Island, a drama set in an insane asylum got a new trailer today and… well… it looks suitably insane.  Some may say it's off-the-hook insane.  Those people would possibly be using a combination of hyperbole and street slang.  Check out the trailer after the jump and see star Leonardo DiCaprio descend into the deepest, darkest bowels of madness, where even Michelle Williams manages to still look really hot.

Director: Martin ScorseseCast: Leonardo DiCaprio, Emily Mortimer, Max von Sydow, Michelle Williams, Mark RuffaloSynopsis: Drama is set in 1954, U.S. Marshal Teddy Daniels is investigating the disappearance of a murderess who escaped from a hospital for the criminally insane and is presumed to be hiding on the remote Shutter Island.