This week on True Crime This Week, Vanessa Richardson examines two brutal mass murderers who managed to evade justice for years. First, the hunt for Nazi war criminal Klaus Barbie, the “Butcher of Lyon,” who fled Europe after World War II and built a new life in South America—until relentless Nazi hunters exposed his past. Then, the story of Anthony “Gaspipe” Casso, a sadistic New York mob boss responsible for dozens of murders who continued running the Lucchese crime family while hiding just miles from FBI headquarters. From war crimes and government cover-ups to organized crime and betrayal, this episode explores how long killers can run—and what finally brings them down.

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