Gillian Flynn's "Gone Girl" became a bona fide literary phenomenon when it was published in 2012: It spent 37 weeks at no. 1 on The New York Times bestseller list, was adapted into a hit film starring Ben Affleck and Rosamund Pike in 2014, and has sold more than 15 million copies globally. The novel tells the story of Amy Dunne, who goes missing under mysterious circumstances on her fifth wedding anniversary; her husband, Nick, becomes the prime suspect in her disappearance. The book switches between Nick's narration and Amy's diary entries, making the reader unsure about who to trust. In honor of "Gone Girl's" 10th anniversary this month, here's what you should know about the novel.
