So there was no witness interviewed during the investigation who was able to describe Aaron as the way he truly was? Faking multiple personalities would never work in real life unless you live in the woods and nobody knows who you are.
shareHe was a street kid. He killed the "girlfriend" and his only "friend" was the other guy in the movies with his. Plus he wasn't pleading insanity...
shareHe was only ever Aaron once he hatched the plan to get into bishop's confidence and kill him as a revenge for what happened 10 years before [when he would have been a "young Roy"]
http://www.kindleflippages.com/ablog/