VIDEO: Leonardo DiCaprio in 'Shutter Island' trailer

Get ready for the creepiest trailer you'll see all week.

"Shutter Island" follows two U.S. Marshals (Leonardo DiCaprio and Mark Ruffalo) in the 1950s sent to an asylum to track down a killer who's disappeared.

Just by reading the word "asylum," you know the staff is up to some unethical behavior, right? And that DiCaprio and Ruffalo going undercover at the asylum is a bad idea?

Soon enough, like the man said, there's running and screaming. Check it out:

Related:

VIDEO: Twilight's New Moon' trailer: Shirtless Jacob, unhappy birthday
VIDEO & PICS: Johnny Depp's 'Public Enemies' trailer
VIDEO: 'BRÃœNO' trailer
'Shutter Island' times and tickets