Peter Evans's biography of Aristotle Onassis, Ari, met with great acclaim when it was published in 1986. Ari provided the world with an unprecedented glimpse of the Greek shipping magnate's orbit of dizzying wealth, twisted intrigues, and questionable mores. Not long after the book appeared, however, Onassis's daughter Christina and his longtime business partner Yannis Georgakis hinted to Evans that he had missed the "real story" -- one that proved Onassis's intrigues had deadly results. "I must begin," Georgakis said, "with the premise that, for Onassis, Bobby Kennedy was unfinished business from way back..." His words launched Evans into the heart of a story that tightly bound Onassis not to Jackie's first husband, but to his ambitious younger brother Bobby. A bitter rivalry emerged between Bobby and Ari long before Onassis and Jackie had even met. Nemesis reveals the tangled thread of events that linked two of the world's most powerful men in their intense hatred for one another and