NASHVILLE: Twenty-nine years after the assassination, Martin Luther King, Jr.'s son Dexter asked James Earl Ray the question which has always troubled him: "Did you kill my father?" Ray's answer was brief: "No, I didn't." In an encounter broadcast live by CNN, King chatted for 17 minutes with Ray, who is currently serving a 99-year sentence for the shooting death of the civil rights leader. Seated in a wheelchair, Ray responded to King's comments in a reedy voice, rambling nearly incoherently at times. King told Ray that his family believes in the imprisoned man's innocence. Ray, who recanted an earlier plea of guilty, has never been tried for the 1968 assassination.