The opening title sequence of Shutter Island establishes the film's mood, themes, and characters over two parts. Part one features old-style font titles representing the 1950s police theme. Part two shows a creepy ship emerging alone from thick fog, introducing the isolated setting of Shutter Island. On board, the main character is shown as flawed and the rattling of many prisoner shackles hanging overhead sets an unsettling tone. The island itself is then revealed, with one dark and stormy side contrasting a brighter side, hinting that something is amiss.