Scalia had driven through the night at the request of Luttig’s mother, who wanted him to be the one to break the news: Luttig’s 63-year-old father, John, had been killed in a carjacking outside his Tyler, Tex., home barely an hour earlier. And so the judicial legend showed up to sit with his former clerk as he placed one grim phone call after another, Luttig recalled in a recent interview, sharing the story publicly for the first time.