Episode 191: John Tamm – Frank Sheeran, The Irishman

In this episode of FBI Retired Case File Review, retired agent John Tamm reviews his investigation of Teamster Union Official Frank Sheeran for racketeering and the movie The Irishman, directed by Martin Scorsese with Al Pacino, and Joe Pesci, and starring Robert DeNiro as Frank Sheeran.

Tamm specifically addresses Sheeran’s claims he killed Jimmy Hoffa and was a mob hitman. John Tamm is a recognized expert on labor racketeering matters.

Q. John Tamm served in the FBI for nearly 30 years. He spent most of his career in the Philadelphia Division working complex organized crime, labor racketeering, political corruption, civil rights, street gangs, and illegal drugs investigations.

Later in his Bureau career, Tamm served for a short period in the Atlantic City Resident Agency out of the Newark Division, and spent several years as a Supervisory Special Agent on the Justice Task Force conducting informant management evaluations and criminal employee misconduct investigations relating to the John Connolly and Whitey Bulger case in the Boston Division.

John Tamm’s last assignment before retiring was serving as an FBI liaison to the National Commission on Terrorist Attacks (9-11 Commission) and as a member of the professional staff of the Commission.

After retiring, he worked for government contractor Booz Allen Hamilton as a military, law enforcement and intelligence consultant. Currently, he is employed as a principal administrative officer of the Presbytery of Eastern Virginia.

Special Agent (Retired)

Q. John Tamm

1975 – 2004







“Frank Sheeran struck me as someone who always used somebody else to do the violent deeds he wanted done. Did Sheeran lull Hoffa? It’s possible, but he didn’t shoot him.”—Retired Agent John Tamm

Labor racketeering is the domination, manipulation, and control of a labor movement in order to affect related businesses and industries. Labor unions provide a rich source for organized criminal groups to exploit their pension, welfare, and health funds. (FBI Website: Organized Crime)

The following are news articles about John Tamm’s investigation and the various prosecutions of teamster union official Frank Sheeran, and articles and video regarding the movie The Irishman about the life of Frank Sheeran and the disappearance of teamster leader Jimmy Hoffa:

Philadelphia Daily News – 2/13/1979:  Mob Whos Who in Crime

Philadelphia Daily News – 2/23/1980:  Sheeran Acquitted,  Cont. Sheeran Acquitted of Racketeering

Philadelphia Daily News – 4/9/1981:  Sheeran Target for Hired Gun,  Sheeran Target for Hired Gun – Cont.

Philadelphia Inquirer – 11/1/1981:  Car caught union leader in FBI net

Philadelphia Inquirer – 11/1/1981:  Squad 4 keeps union on toes,   Squad 4 – Cont. 1,   Squad 4 – Cont. 2

The Irishman | Official Teaser (VIDEO)

Slate Magazine – 8/17/2019: The Lies of the Irishman

Frank Sheeran served 13 years in prison for labor racketeering.










Author Charles Brandt claims that Sheeran confessed to killing Hoffa and committing approximately 25 other mob hits.













The Irishman | Official Teaser (VIDEO)









Jerri Williams

View posts by Jerri Williams
Jerri Williams, a retired FBI agent, author and podcaster, jokes that she writes about the FBI to relive her glory days. After 26 years with the Bureau specializing in major economic fraud and corruption investigations, she calls on her professional encounters with scams and schemers to write police procedurals inspired by true crime FBI cases in her Philadelphia FBI Corruption Squad crime fiction series featuring flawed female FBI agent Kari Wheeler. Jerri’s FBI for Armchair Detectives nonfiction series enables readers to discover who the FBI is and what the FBI does by debunking misconceptions about the FBI in books, TV, and movies. Her books are available as ebooks, paperbacks, and audiobooks wherever books are sold. She’s also the host of FBI Retired Case File Review, a true crime podcast with more than 300 episodes available on all popular podcast apps and YouTube.

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