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Airs Tuesday, July 22, 2014 at 9 p.m. on KPBS TV

Credit: Courtesy of Rogers Photo Archive

Above: Jimmy Hoffa at a 1959 Racketeering hearing. Who killed Hoffa and why?

The HISTORY DETECTIVES SPECIAL INVESTIGATIONS team brings cutting edge tools to some of our biggest historical mysteries. Each new hour-long episode asks probing questions behind a single iconic mystery from America's past.

Courtesy of Stephanie Berger

Tukufu Zuberi, professor of sociology at the University of Pennsylvania.

Courtesy of Stephanie Berger

Wes Cowan, an independent appraiser and auctioneer.

Three investigators team up to solve each case: Wes Cowan, an independent appraiser and auctioneer; Kaiama Glover, professor at Barnard College, Columbia University; and Tukufu Zuberi, professor of sociology at the University of Pennsylvania. As the detectives unearth fresh evidence, sift through clues and crisscross the country in search of answers, they reveal new perspectives on stories we thought we knew.

"Who Killed Jimmy Hoffa?" - In one of history’s most fascinating unsolved mysteries, former Teamsters president Jimmy Hoffa went missing on July 30, 1975, never to be found. Hoffa, a hero to many working Americans, played a major role in the growth and development of the trucking union. But he fell afoul of the law, with allegations that the powerful pension fund was under mob control and used, among other things, to finance Vegas casinos. What exactly happened to Hoffa that day, and why? Recently declassified FBI files and interviews with people close to the story allow a detailed accounting of what likely occurred. The investigation is an exploration of Hoffa’s final days and hours and a revelatory window on power and corruption in the post-war era labor movement.

PBS HISTORY DETECTIVES is on Facebook, and you can follow @histdetectives on Twitter. Past episodes and video clips from the series are available for online viewing.

Who Killed Jimmy Hoffa Preview

While others have concentrated on locating Hoffa’s body, the History Detectives are after the answer to the more important question: Who Killed Jimmy Hoffa?”

History Detectives Special Investigations Preview

The detectives are back with a new mission: Solving the biggest mysteries in American history! History Detectives Special Investigations premieres Tuesday, July 1 at 9/8c on PBS.

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