After the Second World War, while Allied authorities hunted down Nazi leaders across Europe, one Catholic bishop secretly helped many of them disappear. Using his position in Rome, Alois Hudal provided false identity papers, arranged travel documents, and assisted some of the most notorious perpetrators of the Holocaust in escaping to South America and the Middle East through the infamous Nazi "ratlines."

Discover how Hudal's admiration for Adolf Hitler, his fierce anti-communism, and his influence within the Catholic Church enabled the escapes of men such as Franz Stangl, Adolf Eichmann, Gustav Wagner, Alois Brunner, Erich Priebke, and Josef Mengele. Explore the origins of the ratlines, Hudal's relationship with the Vatican, and how the bishop who defended Nazi fugitives avoided prosecution until his death in 1963.