Making a movie about a real serial killer is no easy task. These are real people, and their victims are real people with family members. At the same time, this is not supposed to be a documentary and people want to see a movie, so cinematic elements need to be present. It is a difficult task to pull this off when the main character is such a horrific person, are we supposed to feel sympathy for them? Are they meant to be portrayed as some sort of hero? If so, that is pretty tasteless. "Dahmer" does a pretty good job at portraying Jeffrey Dahmer's psychological state and how far he had fallen from humanity. I did not find myself feeling any sympathy towards him, but found him to be manipulative and creepy, which is what I want to see in a serial killer movie. I appreciate that this movie did not go for much gore, we understand what Jeffrey Dahmer did in real life. I think this movie did a great job of letting the viewer piece together dome of the horrific acts Dahmer did. Jeremy Renner does an eerily good job as the titular character, and gives him a real human feel, which makes this movie all the more unsettling. Outside of this though, the movie is a mess. It jumps all over the place timewise. The ending is perhaps the worst ending I have seen for a movie, it just ends with no payoff or resolution. This movie is close to being good and memorable, but it just falls kind of flat. It could have told more of the Dahmer story and actually shown how he was caught, but it ends before anything of real sustenance happens. If you know a lot about Jeffrey Dahmer and want a little peek into his madness, you should check this out. If you want a "Silence of the Lambs" thriller with gore, then you will be disappointed. the poster advertised this as "Dahmer the Cannibal" but never do you actually seem him eat a victim. Overall, I give this movie a 5.5/10.