U.S. Marshalls go to Shutter Island, a mental hospital for the criminally insane, to find an escaped prisoner and stumble across a bigger mystery. Brief, but frequent moments of shoddy writing and cinematography damage the experience of what might have otherwise been a memorable and insightful film. United States Marshalls Teddy Daniels (Leonardo DiCaprio) and Chuck Aule (Mark Ruffalo) are dispa…