My Friend Dahmer, directed and written by Marc Meyers. (USA) World Premiere, Narrative. Before Jeffrey Dahmer became one of the most notorious serial killers of all time, he was a teenage loner. Conducting grisly experiments in a makeshift backyard lab, Jeff was invisible to most, until his increasingly bizarre behavior unexpectedly attracted friends. Based on the cult graphic novel, My Friend Dahmer chronicles the origins of the man, the monster … the high school senior.