At the LISK’s core, he is a stalker. His stalking behavior is evident before and after he murders his victims. He has had many, many, many years to perfect his stalking behaviors. Dennis Rader (BTK) was a stalker, and someone I have studied with the help of John Douglas, FBI Criminal Profiler. I believe LISK is almost identical to BTK. During Rader’s sentencing hearing, he went into great detail on the “what” and “why” and “how” he chose, stalked, detained, and killed each of his victims. (YouTube Documentary on Dennis Rader) It was through my study of Dennis Rader that I was able to understand the psychology of LISK. It was also the reason why I highly suspected Dr. Charles Peter Hackett to be my own #1 POI.
When I came upon the case after watching the 48 Hours Mystery episode mentioning Dr. Hackett, I was intrigued how he could be ruled out as a POI so quickly. I wanted to know more about this particular man, and went on a search for what information was out there on him. That is when I came upon a particular thread titled “The Last Happy Hour” on WS started by “truthspider”, who was also featured in an article in the UK GQ Magazine.
BDSM was mentioned by ps149 as a possible connection to the LISK. He was either leading the readers of WS in the wrong direction or he was giving intimate knowledge of how LISK found his victims.
He had first posted this picture:
The significance of this particular event flyer is damning. Amber Lynn Costello was never reported missing. It was only when her body was found and she was identified and the last person to see her (her roommate) thought it was around Sept. 2, 2010. It could be that her killer vetted her at that Vendetta at the Beach party and picked her up days later, or it could be her killer “brought” her to that party. This is my speculation based on the LISK’s stalking habits.
Her killer would be aware of the threats made against ALC on UG and that her home address and number were posted on that site he regularly trolled.