Nine days after Bob Lee was found stabbed in San Francisco, police arrested Nima Momeni for his murder. Desperate to squash the ‘Doom Loop’ narrative, San Francisco officials insisted that Bob Lee was killed by someone he knew, a fellow tech executive. But the Cash App founder’s friends and family had never heard of Momeni. Reporter Shawn Wen tells the story of Momeni’s teen years in the East Bay, his minor brushes with the law, and the events that put him on a collision course with Lee.