Kennedy's assassination, Jackie, his stunning widow, had many suitors and well-heeled escorts. These excerpts from "The Good Son" describe how Onassis cheated on Jackie O with opera star Maria Callas from the outset of their marriage and then, although the couple never divorced before his own death in , committed a final incredible act of betrayal. Five minutes after Bobby's death was announced, Onassis called his closest friend, Costa Gratsos, in Athens. Just days after Bobby was laid to rest, Ari arrived at Hammersmith Farm with his daughter, Christina, in tow. He was repulsive, of course, but it wasn't just the money.