The X-Files, Season 2

Scully:
[voiceover] A complete model or psychological profile of the death fetishist does not exist. Extrapolating from material on file at the FBI's Behavioral Science Unit, the compulsion is the result of a complex misplacement of values and a deviation from cultural norms and societal mores - often accompanied by extreme alienation from normal social interaction and traditional avenues for interaction with others. He is more likely to be white, male and of average to above average intelligence. Cases of fetishists with IQs over 150 have been documented. The progression of the pathology can be traced from the fantasy stage to the eventual acting out of fetishistic impulses, including opportunistic homicide.... Agent Mulder believes strongly that the suspect in this case is escalating toward this action. It is my opinion from reading these case files that death fetishism may play a stronger role than suspected in cases of serial murder. That once he begins to murder, it is the killing that draws attention away from a deeper motive. A motive which most people, including law enforcement professionals, dare not imagine. It is somehow easier to believe, as Agent Bocks does, in aliens and UFOs, than in the kind of cold-blooded inhuman monster who could prey on the living to scavenge from the dead.