Shutter Island is a novel by American writer Dennis Lehane, published by Harper Collins in April 2003. A film adaptation was released in February 2010. Lehane has said he sought to write a novel that would be a homage to Gothic settings, B movies, and pulp. He described the novel as a hybrid of the works of the Brontë sisters and the 1956 film Invasion of the Body Snatchers. His intent was to write the main characters in a position where they would lack 20th century resources such as radio communications. He also structured the book to be more taut than his previous book, Mystic River.
Lehane was inspired by the hospital and grounds on Long Island in Boston Harbor for the model of the hospital and island. Lehane had visited it in the Blizzard of 1978 as a child with his uncle and family.