Verkkothe controversial american union leader, jimmy hoffa, was last seen alive on july 30 1975. He is believed to have been killed by the mafia. Verkkointerviews with a former mob lawyer, a murder witness, and an fbi agent are among the sources history detectives unearth as they track jimmy hoffa’s final hours and. Verkkoj immy hoffa, the legendary american union organiser, disappeared from a parking lot outside of the machus red fox restaurant in bloomfield. Verkkofbi agents have searched a plot of land in the us state of new jersey after a deathbed confession renewed hope of solving union boss jimmy.