Case file
Killings of the Turcotte children

Background
Guy Turcotte, born April 21, 1972, worked with his wife, Isabelle Gaston, at Hôtel-Dieu de Saint-Jérôme, a hospital in Saint-Jérôme, Quebec, where Gaston worked as an emergency-room physician and coroner. The couple met in 1999, moved in together in 2000, and became engaged after a period of relationship difficulties that included domestic violence from both parties. Turcotte's brother, Gilles Turcotte, described him as an attentive father.
In mid-January 2009, shortly before a planned family trip to Mexico, Turcotte learned that Gaston was having an affair with Martin Huot, a personal trainer and friend of the family. The couple separated after returning from the trip, agreeing to share custody. During the separation, tensions escalated: Turcotte learned the children had attended a Quebec City carnival with Gaston and Huot, and that Huot had been staying at the family home almost nightly. On February 10, 2009, Turcotte confronted and punched Huot at the family residence. On February 20, 2009, following a confrontation in which Gaston told him she had changed the locks and consulted a lawyer, Turcotte became distressed, later stating he searched online for suicide methods that night.
The Killings
On the morning of February 21, 2009, police responded to a 911 call after Turcotte expressed suicidal thoughts to his mother. Officers entering the home found the bodies of his two children, a boy and a girl. Turcotte was found under his bed, covered in vomit and blood, and told police he had drunk windshield washer fluid and wanted to die. In later testimony, Turcotte described stabbing his son, who cried out and tried to move away, and recalled a similar memory involving his daughter, followed by drinking windshield washer fluid and searching unsuccessfully for the knife to harm himself.
First Trial and Appeal
Turcotte was charged with two counts of first-degree murder. His first trial began April 12, 2011, and on July 5, 2011, a jury returned a verdict of not criminally responsible due to mental disorder (adjustment disorder with anxiety and depressive mood). The Crown successfully appealed, with the appellate court finding that trial judge Justice Marc David of the Superior Court, District of Terrebonne, had erred in law regarding the issue of self-induced methanol intoxication combined with mental disorder.
Second Trial and Sentencing
Turcotte spent 46 months in psychiatric care, including time at Institut Philippe-Pinel de Montréal, before being deemed fit for release; in 2012 he testified before a mental health review board that he was improved and not a danger to others. His lawyer, Pierre Poupart, sought in 2014 to appeal to the Supreme Court of Canada. Turcotte was released on $100,000 bail on September 12, 2014, ahead of a new trial scheduled for September 2015. In December 2015, a jury found Turcotte guilty of second-degree murder for the deaths of his two children. On January 15, 2016, he was sentenced to life in prison, with parole eligibility after 17 years.
Key facts
- Victims
- On file
- Date
- 2009
- Location
- Piedmont, Quebec, Canada
- Case status
- solved
Case timeline
2009-01
Turcotte learns of his wife's affair with Martin Huot shortly before a planned family trip to Mexico.
2009-02-08
Turcotte learns his children attended the Carnaval de Québec with their mother and Huot.
2009-02-10
Turcotte confronts and punches Huot at the family residence.
2009-02-20
Turcotte and Gaston have a tense phone confrontation; Turcotte later expresses suicidal thoughts and searches online for suicide methods.
2009-02-21
Police respond to a 911 call and find Turcotte's two children dead in the family home in Piedmont, Quebec; Turcotte is found injured under his bed.
2011-04-12
First trial begins on two counts of first-degree murder.
2011-07-05
Jury returns a verdict of not criminally responsible due to mental disorder.
2012
Turcotte testifies before a mental health review board that he is improved and not a danger to others.
2014
Turcotte's lawyer announces intent to seek Supreme Court of Canada review of the appellate ruling overturning the first verdict.
2014-09-12
Turcotte is released on $100,000 bail ahead of a new trial.
2015-12
Turcotte is found guilty of second-degree murder in his second trial.
2016-01-15
Turcotte is sentenced to life in prison with parole eligibility after 17 years.
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People
Guy Turcotte
CONVICTEDConvicted of second-degree murder in the deaths of his two children; sentenced to life in prison with parole eligibility after 17 years.
Roles reflect public records and court outcomes at the time of writing — supporting citations are on file under Sources.
Places
Common questions
- What happened to the victim?
- In February 2009, former cardiologist Guy Turcotte killed his two young children in Piedmont, Quebec, stabbing his five-year-old son 27 times and his three-year-old daughter 19 times. After a first trial verdict of not criminally responsible was overturned on appeal, a second trial in 2015 convicted him of second-degree murder, and he was sentenced to life in prison with parole eligibility after 17 years.
- Where did the killings happen?
- Piedmont, Quebec, Canada.
- Who was convicted?
- Guy Turcotte (Convicted of second-degree murder in the deaths of his two children; sentenced to life in prison with parole eligibility after 17 years.).
- What is the current status of the case?
- Status: solved. Last verified July 2026.
Sources
- Guy Turcotte killingswikipedia · Wikipedia · 2026-07-05
- Contemporaneous coverage — CBC Newsnews · CBC News · 2026-07-05
- Contemporaneous coverage — CTV Newsnews · CTV News · 2026-07-05
Last verified JUL 2026





