Is It Real?

Extreme Sleepwalking (2x2)

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Is sleepwalking a legitimate murder defense? Sleepwalkers are known to do some bizarre and often complex activities while sleeping, but generally these amount to little more than interesting stories to tell friends. But a few claim to have been asleep and totally unaware that they were killing someone. Is this even possible? Some juries have bought the controversial defense. Sleep experts and lawyers give their insight into several high-profile murder cases allegedly committed by sleepwalkers.