"Dahmer" tries to tell one of the most horrific stories of recent years. But the whole story of Jeffrey Dahmer does not get told in this movie. There are some shocking moments, but most of the movie gets bogged down in flashbacks (and even flashbacks-within-flashbacks). At some points, you cannot tell if you're watching another flashback or the present moment in the story. Jeremy Renner plays the title character, with an adequately creepy air. Some of his ghastly crimes are shown, while the gore is kept to a minimum. And Dahmer's homosexuality is mentioned, but much of it is kept just off-camera, as evidenced by the montage of Jeffrey's date rape drug-fueled sodomy marathons. This movie does not try to present Jeffrey Dahmer as Dr. Hannibal Lecter. (How could anyone glamorize this murderer?) But I would have preferred some kind of analysis as to why he became a killer. The strange and tragic story of Jeffrey Dahmer left a lot of people sad and wanting answers. But this movie left me wanting satisfaction.