Michael McGlone
Narrator (49 eps)
John Lurie
Narrator (8 eps)
Ernest Volkman
Writer "Gangbusters" (8 eps)
Jack Ruby
Self (archive footage) (2 eps)
Arlyne Weiss-Brickman
Herself (1 eps)
Lisa Caserta
Herself/Friend of Karen Hill (1 eps)
Dan Cox
Himself /Founder of Marietta Museum of History (1 eps)
Oliver Halle
Himself/Former FBI agent (1 eps)
Mark Gribben
Himself / Organized Crime Historian (1 eps)
Karen Hill
(archive footage) (1 eps)
Bugsy Siegel
Himself (Archive footage) (1 eps)