A man who fatally stabbed a convenience store clerk during a robbery 23 years ago apologized repeatedly to her relatives and to his mother before he was executed Tuesday. "I know I hurt you very bad," Michael Lynn Riley said to his victim's relatives, including her two daughters and husband. "I want you to know I'm sorry." Brandy Oaks said she accepted Riley's apology and was pleased to hear it. She was 4 when her mother, Wynona Harris, was killed. "This is a difficult day and there are no winners on either side," Oaks said. "Her spirit will live on...