At the end of this month, at a press conference in New Jersey, Arturo Gatti's friends will announce that they now have proof — courtesy of a private investigator named Paul Ciolino — that the world champion boxer did not take his own life. But despite the best efforts of his still-loyal corner, the story of Gatti's death will probably always be incomplete. He was a great boxer because his fights were definitive; there was never much mystery about him in the ring. But his end wasn't nearly as plain. There are so many possibilities, but each of them leads only to impossibility. Answer after answer, and yet none feels true.