Was Muhammad Ali's most famous photo a lie? The many mysteries of Sonny Liston, boxing's menacing, mob-affiliated sledgehammer

He was a champion, enforcer and enigma — a Hall of Fame heavyweight who became relegated by history as the fallen giant beneath a glowering Ali. Yet more than 40 years later, the questions surrounding Liston and his fateful night against "The Greatest" still refuse to die.

By Ben Fowlkes