Guilty! I’m guilty! Guilty!” declared Scott White -- the alleged killer of American mathematician Scott Johnson -- to the court during a pre-trial hearing in early January 2022. It was an astonishing moment for Scott Johnson's older brother Steve, who was not only face-to-face with White for the first time, but also witnessing this now middle-aged man admitting his guilt for a crime he committed back in 1988. After 30 long years of the police doggedly persisting with the theory that Scott Johnson had taken his own life, this was the moment of reckoning for his brother Steve. But how did veteran detective Peter Yeomans finally crack the case? In this episode, we find out about the person whose evidence proved to be a game-changer in Yeomans' two-year investigation. See omnystudio.com/listener for privacy information.