Closing arguments are anticipated in the Lindsay Clancy murder trial, where she is charged with the deaths of her three children—Cora, 5; Dawson, 3; and Callan, 8 months—at their Duxbury home in January 2023.
Prosecution vs Defense
Prosecutors allege the killings were deliberate, claiming Clancy directed her husband to run errands before strangling their children and attempting suicide. The defense counters that Clancy suffered from postpartum psychosis, impairing her awareness of her actions’ wrongfulness. Expert testimony suggested she had bipolar disorder alongside postpartum psychosis.
Mental Health Focus
Her mental health treatment has been central to the trial. The defense claims Clancy sought assistance extensively before the incident, including a psychiatric hospital stay and being prescribed 13 medications within four months.
Trial Proceedings
Clancy did not testify in her defense, which rested last Friday. The prosecution is now presenting rebuttal witnesses, starting with a cross-examination of Dr. Avram Mack by Kevin Reddington, Clancy’s attorney.
“She felt really close to them, her husband, and her kids,” said Heilbrun, describing Clancy’s state before the incident.
The trial has attracted national attention, particularly on postpartum psychosis and maternal mental health, with gatherings of Clancy supporters outside the courthouse.
Witness Cross-Examination
During Monday’s proceedings, psychiatrist Dr. Avram Mack faced questioning on postpartum psychosis, where Clancy’s lawyer, Kevin Reddington, pushed back against Mack’s refusal to recognize it as a diagnosis.
Mack’s testimony acknowledged Clancy’s bipolar II disorder but denied manic episodes, noting her depressive symptoms. He highlighted the absence of hypomania, which differentiates bipolar II from the more severe mania that can lead to psychosis.
Earlier, forensic psychologist Kirk Heilbrun testified on Clancy’s mental health, reporting her anxiety and depression post her third child’s birth, exacerbated by breastfeeding concerns. Her mental health declined through 2022, leading to intrusive thoughts and panic symptoms by late fall.
Rebuttal Witnesses
Prosecution rebuttal witnesses countered the defense’s expert, Dr. Phillip Resnick. Resnick attributed Clancy’s actions to postpartum psychosis, suggesting she believed she was sparing her children by taking them to heaven.
Dr. Mack concluded she likely suffered from major depressive episodes rather than a full bipolar disorder experience, delving into her medication side effects without attributing them to psychosis.
The trial has become a cultural flashpoint, engaging audiences and energizing the courthouse attendees.

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