19 July 2025

Sleepwalker murder: is he responsible?

I did not study sleepwalking during my university studies and haven’t seen it since.  The medical definition of sleep walking/somnambulism is: purposeful moving while in a deep stage of sleep. Sleep-walking occurs most frequently in children, particularly boys. Sedatives tend to exacerbate rather than cure sleep-walking. The best measures are preventive: ensure that the sleepwalker is in a safe room for walking and cannot accidentally fall downstairs.

Stab in the dark: can people kill without being conscious? by Eleanor Shakespeare
The Guardian

Some types of sleepwalking are related to seizure disorders & other neurological conditions; most cases are transitory. Parasomnias/involuntary behaviours during sleep are usually harmless. But some lead to reckless or violent actions.

Law Here are some criminal cases in which the sleep­walking defence was invoked, reported in Psychology Today; Stacks Law Firm and USNews.

In 1846, Albert Tirrell cut the throat of a Boston prostitute, set fire to the brothel, then fled to New Orleans, where he was arrested. Tirrell said he was a chronic sleepwalker and perhaps committed the crime while asleep. Strangely the jury agreed and found him not guilty. Would he have been guilty if the victim  wasn't a prostitute?

In Glasgow in the 1870s Simon Fraser, disoriented from a nightmare about beasts, dashed his son’s head on the family’s bedroom floor. He was acquitted for the murder, since it was so clear to the jury that he had no desire to kill his child. The episode had probably been a night terror, with or without sleepwalking.

The Boston Tragedy referred to the murder of Maria Bickford, 1846;
Tirrell was acquitted because of sleepwalking.
National Police Gazette, 1846


Texan man Isom Bradley testified in the 1920s that he and his mistress were in bed when he heard a dangerous enemy. Fearing a secret attack, he went put a pistol under his pillow. Later he jumped up and fired shots, woke up and found his girl­friend dead in bed. Bradley was convicted of murder, but the convict­ion was reversed on appeal; he had been acting in a somnambulistic state.

In 1950 Melbourne mother Ivy Cogdon axed her only child to death; Patricia was found early in the morning, in her bed, with the bloodstained axe near her body. The mother had long been prone to psychological cond­itions which had been treated by several doctors. Cogdon’s defence was that she was sleep­walking when she killed Patricia, “protecting” her girl from invading Korean soldiers in Carnegie. She was acquitted due to sleep­walking.

In 1987, Kenneth Parks sleep-drove in Ontario to his mother-in-law’s house, stabbed her to death and strangled his father-in-law almost to death. He got back in his car, drove to a police station with blood on his hands but had no memory of the murder. Parks had a strong family history of parasom­nias (sleepwalking, enuresis and night terrors), and he was stressed, depressed and insomniac. These factors combined to make sense of his sleepwalking behaviours. No intent, not guilty of murder!

In 1994 Michael Ricksgers accidentally murdered his wife in Pennsylvania during a sleepwalking ep­is­ode, provoked by a medical condition, sleep apnoea. Ricksgers told police that he awoke to find a gun in his hand and his wife bleed­ing in bed beside him. He apparently dreamt about an intruder breaking in! But pros­ec­utors said Ricksgers was furious that his wife was leaving him, so he was sentenced to life in prison, without parole

A devout Mormon, Scott Falater stabbed his wife 44 times with a hunting knife, then dragged her into a backyard pool and drowned her in Arizona in 1997. Falater, who had no apparent motive, said he had a history of sleepwalking, was sleep-deprived and was uncon­sc­ious during his attack. Yet Falater had tried to conceal the knife and bloody clothes in his car. A jury found Falater guilty of first-degree murder!

In 2001 Stephen Reitz killed his married lover, Eva Weinfurtner, during a romantic island holiday. He smashed her head, disloc­at­ed her arm, fractured her wrist, ribs, jaw and skull, and stabbed her neck. Reitz told Californian police that he remembered nothing, though through flash-backs he recalled “fighting a male intruder”. At trial, his parents testified that their son had sleep­walked since childhood. However due to the defendant's past history of violence towards Weinfurtner, Reitz got first-degree murder.

In 2009 Brian Thomas appeared in a South Wales court on a murder charge, after strangling his wife as they slept in their camp­er van. Psychiatrists testified that locking him up would not be helpful as he had had a genuine sleep disorder, suffering night terrors for c50 years, and thus bore no responsibility for his actions.
 
Scott Falater's case
The Index-Journal, Greenwood South Carolina,
June 1999


Science  Ursula Voss’ team at Bonn University reported that even during lucid dreaming (a state in which some people can control their dreams), some areas of the brain associated with intent stayed Offline, while other areas associated with consciousness were On.

Similarly a study by Claudio Bassetti at the University of Zurich manoeuvred a sleep­walker into a brain scanner during a sleep­walking episode. He showed no activation in the areas of the brain associated with intent, though emotional areas and movement areas were active. So while judgement was Off, the ability to act out emotionally was On.

Antonio Zadra at the University of Montreal measured the brain activity of 10 sleepwalkers and 10 control subjects to det­ermine what stage of sleep they were in. Their results might event­ual­ly enable a test for genuine sleepwalkers, a big break-through.

Conclusion
When the accused was sleep-deprived, under stress or had a history of sleepwalking, he was more likely to experience para­somnia behav­iours. If he'd also been using alcohol or drugs, more so! But it's more difficult to explain away any behaviours as strictly biological in origin. Legal systems need to take science more seriously, finding explanations for the biol­og­ical and social bases of sleep behaviours, establishing who has a genuine sleep disorder and who is faking.

In Australia, a person cannot be guilty of an offence if they were unconscious or asleep when the act was committed. Courts throughout Australia have often confirmed that finding a defendant’s actions must be voluntary for a finding of guilt. If a person is asleep and therefore not conscious, they cannot have acted voluntarily.



1 comment:

Parnassus said...

Hello Hels, These terrible stories about people who inadvertently kill those they love are like the old saying "with friends like that, who needs enemies?"

The older tragedies you mention are beyond modern control or detection. But these days, even if a diagnosis of sleepwalking produces a verdict of not guilty, there is still the problem that they might get into a similar rage the next time they fall asleep. So they are still dangerous to be at large. With today's technology, there should be some sort of alarm system for sleepwalkers if they leave their room or house, especially if they have acted violently in the past.
--Jim