Alvin "Creepy" Karpis could claim many things in his life. He was not only the brains behind the Barker-Karpis Gang, but the last public enemy of the 1930s, one of J. Edgar Hoover's most hated adversaries, and the longest serving inmate in Alcatraz history.

Julie Thompson, author of "The Hunt for the Last Public Enemy in Northeastern Ohio: Alvin "Creepy" Karpis and his Road to Alcatraz" is my guest on this week's episode of Most Notorious. She reveals fascinating details about this brilliant, cunning and dangerous bankrobber-killer. She also tells the little known story of Karpis's final heist in Garrettsville, Ohio - the last successful train robbery in American history.

Episode correction: Alvin Karpis died on August 26th, 1979.

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