Gone Girl by Gillian Flynn is a psychological thriller about a marriage that has gone wrong.  Amy and Nick have been married for five years.  Both have lost their New York magazine jobs as journalists. They decide to move from their Brooklyn home, which Amy loves, to Nick's hometown, Carthage  Missouri.  Nick and his twin sister have bought a bar, which takes up a lot of Nick's time.  Nick's mother is dying from cancer, and the couple are also helping Amy's parents financially.  Her parents made their money from writing a children's book series, Amazing Amy, based on their daughter, or based on a fictional character that Amy thinks they wished their daughter would be.  Due to the popularity of the series Amy has a trust fund which she is now using to help her parents.  Nick and Amy are a couple that are going through a lot of changes in their life. On their fifth wedding anniversary Nick arrives home and finds the front door wide open.  In the living room there is a sign of a struggle, in the kitchen signs of blood that has been cleaned but not completely and Amy has disappeared.  As the investigation begins, even without a body people are assuming that Amy has been murdered.  In the early stages of the investigation no one believes that Nick could be guilty of the crime.  However as the investigation continues he certainly seems to be guilty, and the only person who believes in his innocence is his twin sister.  Every anniversary Amy has made up a scavenger hunt for Nick taking him all over town, and eventually at the end he will discover his anniversary present.  This year is no exception.  While the police are investigating this disappearance, Nick is following Amy's clues in her current scavenger hunt. The novel goes back and forth from Nick's day by day existence since the disappearance, to excerpts from Amy's journal. There are many twists in this novel that I did not expect.  Although I am not a reader of thrillers I did enjoy this novel and would highly recommend it.   I would like to hear from others that have read this book, especially those of you who do love thrillers.  What did you think?