10 Brilliant Movie Plot Twists That Don't Actually Make Sense

In Gone Girl, Amy Dunne (Rosamund Pike) vanishes without a trace, and her husband Nick (Ben Affleck) is accused of murdering her. As the mid-film twist reveals, Nick is innocent and Amy has faked her death and framed him in order to get revenge on him for cheating on her and being a terrible husband. 

Gone Girl is a movie that's so stylishly directed and persuasively performed that it becomes easy to forget that it does get quite silly at times. Amy's plan hinged on police incompetence at every turn, with them failing to investigate obvious clues that pointed to Nick's innocence. To be fair, a key theme of Gone Girl seemed to be how such investigations are mishandled, and perhaps this was the picture's way of exploring that, but it still wasn't terribly smart of Amy to rely so heavily on other people's mistakes. 

Things get even stranger later on. After Amy decides to return, she pretends an unstable ex-boyfriend named Desi (Neil Patrick Harris) had kidnapped her and, after killing him, she escapes. Again, everyone just believes her story, and they conveniently forget to check Desi's CCTV and phone, which would've revealed Amy entered his house as a guest and that he was somewhere else when she disappeared. They also don't notice her self-inflicted wounds while examining her. 

Again, perhaps the stupidity of the investigators was deliberate, but this was still distracting, and Amy really wasn't quite as smart as she thought she was. Rather, she was exceptionally lucky.