Answer
The infamous disappearance of Jimmy Hoffa, the influential labor leader, remains unsolved to this day, with various theories surrounding his fate. One notable claim emerged from Richard Kuklinski, a notorious contract killer known as the "Iceman," who asserted his involvement in Hoffa's disappearance. Kuklinski's account added a layer of intrigue to the already enigmatic case, although the veracity of his involvement has been a subject of ongoing debate and speculation.