CBR has been provided with an exclusive clip from the upcoming film adaptation of the OGN My Friend Dahmer.

Showcasing the beginnings of the so-called "Dahmer Fan Club," the clip provides some insight into the friendships of a young Jeffrey Dahmer, before he would murder countless boys and men between the summer of 1978 and the summer of 1991.

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Based on the biographical comic book by John “Derf” Backderf, the film follows a school-age Dahmer and his friendship with Derf, offering a glimpse into the future serial killer's anti-social and sociopathic behaviour. Sometimes painting a sympathetic glimpse into the life of Dahmer, the film balances its sympathy with an honest insight into the horrific man's psyche.

Take a look at CBR's exclusive clip from My Friend Dahmer below.

Jeffrey Dahmer murdered 17 men and boys in the Midwest United States between 1978 and 1991 before being captured and incarcerated. He would become one of America’s most infamous serial killers. This is the story before that story.

Jeff Dahmer (Disney Channel’s Ross Lynch) is an awkward teenager struggling to make it through high school with a family life in ruins. He collects roadkill, fixates on a neighborhood jogger (Vincent Kartheiser, “Mad Men”), and copes with his unstable mother (Anne Heche) and well-intentioned father (Dallas Roberts). He begins to act out at school, and his goofball antics win over a group of band-nerds who form The Dahmer Fan Club, headed by Derf Backderf (Alex Wolff, “Patriots Day”). But this camaraderie can’t mask his growing depravity. Approaching graduation, Jeff spirals further out of control, inching ever closer to madness.

Marc Meyers’s MY FRIEND DAHMER is the haunting, sad, funny, true story of Jeffrey Dahmer in high school, based on Derf Backderf’s critically acclaimed 2012 graphic novel of the same name and Meyers’s own 2014 Black List script.