Somnambulism: A sleep disorder involving complex motor acts; also referred to as sleepwalking. But what happens when those complex motor behaviors involve criminal acts? There have been a few cases in history where defendants have claimed this excuse for violent crimes with deadly consequences. But can you really get away with murder with this excuse? The answer may surprise you. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.