For some, part of the attraction of lust killing is the opportunity to pose wearing the clothes of their victims. For the two discussed here, this would seem to be a dominant paraphilia. Both men showed evidence suggesting a role of stress in their killing. Commander of the largest military base in Canada, Colonel Russell Williams would seem to be a most unlikely sexual serial killer, particularly since his victims were women under his command. Williams graduated to killing via breaking into homes and stealing pairs of underwear. He built an enormous collection of these, all carefully curated. It is possible that the drug Prednisone played a role in his aberrant trajectory. Dennis Rader appeared similarly to be a respectable family man. There were several early experiences that he recalled (e.g. seeing his mother trapped) which might have played a role in his development.