d'Angelo's Brutality Could Have Been a Part of the Mystery

Some forensic psychologists believe D'Angelo followed a textbook path of sexually driven perversions that likely started when he was a child. One known incident may have contributed towards this. Psychiatric nursing professor Ann Wohlbert Burgess said serial offenders often develop a fixation with their crime from an early age. The rape of D'Angelo's sister would have been a significant event that, quote, could have set the nucleus of the fantasy.