"RIDDLE: The Podcast" accompanies the Fox Nation special, "Riddle: The Search for James R. Hoffa." In the podcast series, Fox News Anchor and Senior Correspondent Eric Shawn takes you behind the scenes of his investigation of the disappearance of the iconic labor leader, James R. Hoffa, who vanished in 1975. The podcast interviews are with people involved in the case or who have extensive knowledge of it: Former Philadelphia Mob Boss Ralph Natale, "I Heard You Paint Houses" author Charlie Brandt, Pulitzer Prize winning former Detroit Free Press reporter David Ashenfelter, "Hoffa Wars" author and investigative journalist Dan Moldea, "The Quiet Don" author Matt Birkbeck, former Fox News producer Ed Barnes, former I.R.S. special agent Melvin Gudknecht, Father Jonathan Morris, and Fox News cameraman Scott Wilder, among others.