Seven Pounds
We have to admit that Will Smith showed us just how good of an actor he was in this drama. Despite this, what really made the viewers emotional would be the twist ending. In the end, his character reveals that he is a killer who has claimed the lives of seven people while he texted behind the wheel.
American Psycho
When it comes to iconic serial killers in film history, it is hard to beat this one. The movie boasts the best twists that we have ever seen in the genre, which is saying a lot. In particular, we want you to focus on the scene in which Patrick visits Paul only to find that it is spotless, not bloody like he had in mind.