jeffrey-dahmer by Rosario Monachino September 22, 2022, 4:00 pmUpdated: September 23, 2022, 8:42 am Evan Peters as Jeffrey Dahmer. Written by Rosario Monachino Rosario is a former content editor at IGV who specialized in film, TV, and entertainment news. He has a degree in English and Film from the University of Salford and a master's in Journalism from Liverpool John Moores University.