Gone Girl. Reading through an implausible plot wasn't bad enough-and we were expected to believe the main character actually kept a diary written like a novel-then it just ends. I felt like the author was taking too long to finish the book and got the "hurry up" from the publisher so went for a cheap, rushed and unsophisticated ending. Why this book was popular is beyond me. Maybe readers don't care any more-any old trash will do.