In the ongoing case of Lindsay Clancy, a forensic psychologist took the stand on Monday, 24 August, to provide insights regarding Clancy’s mental state at the time of a tragic incident that resulted in the deaths of her three children. Dr. Kirk Heilbrun’s testimony shed light on Clancy’s psychological conditions while outlining potential factors that may have influenced her actions in January 2023.
:max_bytes(150000):strip_icc():format(jpeg)/Dr-Kirk-Heilbrun-and-Lindsay-Clancy-in-court--5f74f3d0c9a446188ef2da0b37afd462.jpg)

Clancy, who is 36 years old, faces charges related to the murders of her children—Cora, aged five; Dawson, aged three; and eight-month-old Callan—whom she allegedly strangled with exercise bands in their family home in Duxbury, Massachusetts. She has pleaded not guilty, asserting a lack of criminal responsibility due to claims of postpartum psychosis, a defence that is central to the trial’s narrative.
Dr. Heilbrun, who conducted a comprehensive evaluation of Clancy over a three-day period in April 2023, provided a diagnosis of Bipolar II disorder. He indicated that, while she had not displayed manic episodes, she did experience significant depressive episodes. The psychologist remarked that arriving at this diagnosis was complex, although he noted that Clancy had shown a positive response to medication aimed at managing her condition.

During his testimony, Dr. Heilbrun elaborated on Clancy’s mental struggles, disclosing that she had expressed “intrusive thoughts.” These included beliefs that her brain was compromised and considerations of harming herself and her children. He further described the killings as being “out of character” for Clancy, positing that two potential explanations could account for her actions: the belief that she needed to save her children from suffering posthumously or the possibility of acute psychosis, which he ultimately rejected.
A significant portion of Dr. Heilbrun’s testimony revolved around Clancy’s reaction following the incident when her husband, Patrick Clancy, discovered the scene. When confronted about her actions, she reportedly stated, “I tried to kill myself.” Dr. Heilbrun suggested that this response casts doubt on the notion of her being in a psychotic state during the events, as a person experiencing such a state may have given an entirely different explanation, such as acting under orders from an auditory hallucination.
Dr. Heilbrun mentioned that Clancy claimed to have heard a male voice once during the brief timeframe when the killings transpired, instructing her to take her children’s lives as a precursor to her own suicide. He found it peculiar that the voice was reported only at that moment and highlighted inconsistencies in her accounts regarding what the voice had commanded her to do.
The psychologist further suggested that Clancy’s actions might be classified as “altruistic filicide.” He explained that she may have genuinely believed that killing her children would spare them from suffering and that they would be united in the afterlife. In her final moments with them, she reportedly reassured her children by saying, “Go to God, baby. Go to God.”
However, the proceedings were interrupted when Dr. Heilbrun mentioned Clancy’s Catholic faith in response to a question. This comment prompted Clancy’s attorney, Kevin Reddington, to request a mistrial, arguing that references to her religion were inappropriate and irrelevant to the case. The presiding judge, William Sullivan, ultimately denied the mistrial motion but instructed the jury to disregard the religious reference, affirming that it was not to be considered in their deliberations.
The presiding judge communicated his disapproval of the mention of Clancy’s religion and assured the jury that such aspects were outside the scope of the trial. Following this directive, the jury was dismissed, with Judge Sullivan indicating plans to clarify the situation further when the court reconvened.
Dr. Heilbrun is expected to continue his testimony when the trial resumes, and prosecutors have indicated that they will call one more rebuttal witness before concluding their case. The trial, which has garnered extensive attention and is being live-streamed to the public, continues to unfold as the legal and psychological ramifications become clearer.
As the case progresses, it poses significant questions regarding mental health and parental responsibility, prompting wider discussions about the importance of addressing mental health challenges post-pregnancy. Those experiencing mental health difficulties are encouraged to reach out to appropriate services for support and guidance.
