I disagree For one Freddy Krueger and Jason Voorhees are fictional thankfully Secondly Wikipedia has a trend of if there are multiple killers involved grouping the articles together Beltway Snipers Fred and Rosemary West David and Catherine Birnie Speed Freak Killers etc If only one killer is involved the article is filed under the killer s name see Gary Leon Ridgway Dennis Rader Dennis Nilsen Jeffrey Dahmer Ted Bundy etc Even when the killer remains unidentified there are not two separate articles for the killer him herself and the killing spree see Zodiac Killer Long Island serial killer Lisbon Ripper Claremont Killer etc with prime suspects given their own articles in special cases see Arthur Leigh Allen Stephen Hatfill etc