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This week on season on the season premiere of 48 hours, a Texas teenager is charged in the deadly stabbing of his
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twin sister. At his trial, attorneys for the 17-year-old, his name is Benjamin Elliot. They said he was sleepwalking
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when he killed her. But would a jury believe it? Here's an early look at Aaron Morardi's 48 hours report.
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[Music] In the early morning hours of September 29th, 2021, Texas teenager Benjamin Elliot was on
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his phone calling 911. >> County, no more. What's the location of your emergency?
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>> I just killed my sister. Oh my god. >> Okay, tell me exactly what happened. >> I thought it was a dream. I I took my
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wife and I stabbed her. I don't want her to die. >> How old is she? >> 17. We're twins.
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>> We're going to have to start CPR right now. >> Where's your son? >> Okay. Okay. We got it. EMS is coming.
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>> One, two, three. >> Arriving paramedics and police took control of the scene.
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>> What happened, son? >> It was a dream. >> He said it was a dream. Honey, >> what the
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>> Benjamin's parents could not imagine why their son would hurt his twin sister.
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Even prosecutor Megan Long found no motive. >> Were you able to find any evidence that
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there was a problem with these twins? >> No, we definitely looked into it and tried.
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>> This is the first study that we did. >> Benjamin's attorneys asked Dr. Gerald
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Simmons, a sleep disorder expert, to examine Benjamin. We have a video of him right here.
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>> Oh, there he is. And got an answer. You are convinced this was a sleepwalking
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incident? >> Yes. >> Prosecutors disagreed. >> I wouldn't say that it's impossible for
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someone to commit a crime while sleepwalking. I just don't think that was the case with Benjamin Elliot.
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>> Benjamin was charged with intentionally murdering his twin sister, Megan. >> What makes you so sure that you stabbed
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your sister while you were sleepwalking? I would never have done that. I loved her. She was my best and closest friend.
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>> This is so tragic and shocking. Erin Morardi joins us now. We have so many questions.
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>> First, how common is sleepwalking and has that ever been used successfully as
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a defense? >> Well, sleepwalking is far more common than I ever guess. It is actually a
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sleep disorder. You could actually eat while you're sleeping, too. Um, and the prosecutor in this case was a
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sleepwalker. Her children had actually been sleepwalkers. Some of the jurors had been sleepwalkers and new people.
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So, it's very it's common. >> It's not so common to commit a crime while you're sleepwalking, but it has
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been used successfully as a defense. There's one is hard to take super seriously. In the sunset, a man says he
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he got in a car, he drove, attacked his his mother-in-law, >> killed her, and was acquitted by the
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jury um because he successfully argued that he was sleepwalking at the time. >> My middle son, Nehemiah, who's now 19,
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he would climb out of his top bunk, go down the little ladder, and walk all the way downstairs. So, it it it happened in
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my family. I know sleepwalking is real. Yes. The >> question I have is, was there any
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evidence of any type of tension between the brother and sister? >> That was the most troubling thing for
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me. Now, I happen to be a twin and of course I can't imagine ever hurting my twin sister, but there was absolutely no
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evidence. They spent all their time in the phones. There's no emails. There's no texts. Nobody came forward with any
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evidence. So, it's just such a mystery and so puzzling. >> So tragic. >> All right, Aaron Morati, thank you so
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much. I'll be watching this and you can watch Aaron's 48 hours report. The boy who killed his twin.