Texas teen confesses to stabbing twin in 911 call: "I just killed my sister."

Benjamin Elliott, 17, was charged with fatally stabbing his twin sister, Meghan. At trial, his defense attorneys insisted he was sleepwalking when he killed her. Would a jury believe it? Erin Moriarty reports in the season premiere of "48 Hours."

source https://www.cbsnews.com/video/texas-teen-confesses-to-stabbing-twin-in-911-call-i-just-killed-my-sister/