Doug McGregor, a geographic profiler known for his work on the Long Island serial killer case, delves into the recent developments surrounding Rex Heuermann. He discusses new evidence revealed in court, highlighting the complexities faced by the prosecution. McGregor explains the intricate geographic profiling of the killer's behaviors, emphasizing the significance of mapped locations and the tactical decisions in victim selection. The conversation also touches on the psychological aspects of perpetrators, including trust and control in their criminal strategies.