On June 5th, 1968, at L.A.'s Ambassador Hotel, Robert F. Kennedy celebrated his victory in the California Democratic primary with a rousing victory speech anticipating a successful run for the presidency. Moments later, gunshots shattered that dream: like his brother before him, Bobby Kennedy lay mortally wounded at the hand of an assassin. The police quickly apprehended Sirhan Sirhan, who the world believed had single-handedly masterminded the shooting. Shockingly, that may not be so, as documentary filmmaker Shane O'Sullivan presents powerful new evidence to the contrary.