Gone Girl by Gillian Flynn

On a warm summer morning in North Carthage, Missouri, it is Nick and Amy Dunne’s fifth wedding anniversary. Presents are being wrapped and reservations are being made when Nick’s clever and beautiful wife disappears. As the police begin to investigate, the town golden boy parades a series of lies, deceits, and inappropriate behavior. Nick is oddly evasive, and he's definitely bitter - but is he really a killer?