The Confession

S1 E3: The investigation, covering three police stations, thousands of hours of video, hundreds of interviews, and an online world involving domination, submission, and torture, eventually identifies the manipulative killer. A man hiding his evil fantasies behind a reputable and unassuming mask. What follows is the longest and, arguably, highest-profile trial in Irish criminal history, revealing the methods used to track the killer and his extraordinary motivation for his depraved crime.