4 Grisly Killers Who Successfully Used Sleepwalking As A Criminal Defense

Published June 21, 2017
Updated July 20, 2017

Brian Thomas

Brian Thomas Suit

BBCBrian Thomas leaves Swansea Crown Court after the verdict.

Brian Thomas had had a long history of night terrors and sleepwalking.

In 2010, he was on vacation with his wife in their camper in Wales just before their 40th anniversary when he strangled her to death after having a nightmare that they were being burglarized. According to Thomas, he vaguely remembered coming out of sleep in a panic and seeing “someone in the camper van, a man with blue jeans and a black fleece lying on top of [his wife] Christine.” Thomas stated that he then shouted “you bastard!” and grabbed the man by the throat.

After coming to a state of wakefulness, Thomas realized what he had done and began desperately looking for help. On the phone with emergency services, Thomas was so hysterical that he could hardly make out the words, “Can you send someone? I think I’ve killed my wife. I’ve killed her. Oh my god.” When police arrived, Brian Thomas was standing outside the camper crying and shaking.

The evening before the murder, the couple had been bothered by “boy racers” zipping around their car park doing noisy tricks. This was thought to have triggered the attack. A team of psychologists showed that Thomas suffered from a disorder that caused him to lose control while sleeping.

Thomas was eventually acquitted of all charges but nevertheless forced to live with the memory of his horrific deed.


Next, read up on five strange sleep disorders that’ll absolutely astound you. Then, have a look at some other unusual disorders that seem too bizarre to be real.

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All That's Interesting
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Established in 2010, All That's Interesting brings together a dedicated staff of digital publishing veterans and subject-level experts in history, true crime, and science. From the lesser-known byways of human history to the uncharted corners of the world, we seek out stories that bring our past, present, and future to life. Privately-owned since its founding, All That's Interesting maintains a commitment to unbiased reporting while taking great care in fact-checking and research to ensure that we meet the highest standards of accuracy.
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John Kuroski
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John Kuroski is the editorial director of All That's Interesting. He graduated from New York University with a degree in history, earning a place in the Phi Alpha Theta honor society for history students. An editor at All That's Interesting since 2015, his areas of interest include modern history and true crime.