Hilton's behavior had become increasingly erratic, Tabor said, and he paid him off in hopes of severing their already fractured relationship.
"This is systemic behavior with most of these guys," Hickey said. "He feels like the world is against him. There's issues of rejection, abandonment. Killing becomes his focus."
But Hilton got sloppy, especially in disposing of clues linking him to Emerson's death. He was arrested at a Chamblee gas station and convenience store near a busy intersection after being spotted dumping loads of sleeping bags, backpacks, bedrolls and blankets into a Dumpster.
"Narcissism is not uncommon for such antisocial personality disorders," said Joe Davis, a veteran profiler and forensic psychologist based out of San Diego. "He likes the attention he's getting."
While all four of the bodies Hilton could be connected with were left in dense forests, they were still somewhat conspicuous.
Hilton led authorities to Emerson's body on the condition they not seek the death penalty. Hunters in Florida and North Carolina, respectively, discovered Dunlap's and Bryant's corpses mere meters from unpaved hunting trails.
"I suspect he wanted them to be found," Hickey said. "He wants to be heard. He wants to frighten people. He wants to show his power. To him, it's really about having a voice."
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