Leonardo opens up about fame, his films, and why he adores his director Martin Scorsese.

And even though Leo has starred in Scorsese’s past three films: The Aviator, The Departed, and Gangs Of New York, the actor tells Parade.com that Shutter Island, which hits theaters on Feb. 19, “is one of the most intense, hardcore filming experiences I’ve ever had.”

Leo confesses that while researching his role for U.S. Marshall Teddy Daniels, “we explored what the mentally ill had to face in the days when mental hospitals were called insane asylums. It was really very traumatic, and I don’t say that about a film very often. I went to places and unearthed some things that I didn’t think I was capable of. It was like an emotional layer cake that just kept getting deeper and deeper.” Read more