Leonard “Raheem” Taylor still has hope that he won’t die on Feb. 7. He still believes in the justice system that sent him to death row. “I feel real positive and real prayerful that I will get a stay of execution,” he said. Twenty days before his scheduled execution date, Taylor sat down in a booth in the visitor’s room at a prison in Missouri. At 58, his hair is neatly parted and graying, and he wears silver wire-rimmed glasses. For nearly four hours, he talked about life and his possible upcoming death. Some anecdotes bring out a talkative, lighthearted side. In other moments, he’s solemn or even at a loss for words. But he remains steadfast in his claim that he is innocent in the quadruple murder of his girlfriend and her three young children for which he has been imprisoned for nearly 20 years. Taylor argues he was halfway across the country when they were killed in their home in Jennings, near St. Louis. After prosecutors learned of his “airtight alibi,” he alleges they prodd...