DAHMER - Monster: The Jeffrey Dahmer Story Cast

Evan Peters plays Jeffrey Dahmer, the notorious serial killer central to the show's storyline.

Richard Jenkins portrays Lionel Dahmer, Jeffrey's father, who struggles with the impact of his son's actions.

Molly Ringwald takes on the role of Shari Dahmer, Jeffrey's stepmother.

Michael Learned plays Catherine Dahmer, Jeffrey's grandmother.

Niecy Nash-Betts is Glenda Cleveland, the neighbor who suspects Jeffrey's disturbing activities.

Nick Fisher depicts a young Jeffrey Dahmer, showing his early years.

Michael Beach plays Detective Dennis Murphy, involved in the investigation of Dahmer's crimes.

Colby French portrays Patrick Kennedy, an officer related to Dahmer's case.

Mac Brandt plays Robert Rauth, involved in the narrative surrounding Dahmer.

Shaun Brown is Tracy Edwards, who narrowly escapes Dahmer and leads to his capture.

Grant Harvey portrays Rolf Mueller, one of the officers who arrests Dahmer.