The inaugural episode.  In February 2011, Joseph Lozito was the intended fifth victim of Maksim Gelman, who had already killed four people over a 28-hour killing spree in New York City, stabbing three of them to death.  Lozito, after being stabbed in the face, neck, hands, back, and arms fought off Gelman and took him down, almost losing his own life in the process.  Lozito later found out there were two cops on that same train and did nothing to help until he had subdued Gelman.  He sued for negligence.  This is the amazing, uncut, full story as told by Lozito himself.