Lindsay Clancy, accused of the tragic deaths of her three children, is undergoing trial in Plymouth, Mass. A defense psychologist, Paul Zeizel, testified that Clancy lacked understanding of the “wrongfulness” of her actions due to significant mental health issues.
Zeizel’s testimony forms a crucial part of the defense’s argument that Clancy should not be held legally accountable for murder. The defense claims she suffered from bipolar disorder and postpartum psychosis, a rare mental condition which reportedly led her to kill her children before attempting suicide. Zeizel has been in professional contact with Clancy since the incident.
“She was unable to conform her behavior to the rule of law. She had no appreciation for the wrongfulness of her act,” said Zeizel, citing a “mental disease or a defect.”
At 36, Clancy pleaded not guilty to the murder charges involving her children, Callan, Dawson, and Cora Clancy, aged between eight months and five years. Postpartum psychosis, a severe yet rare condition, is associated with stress, sleep deprivation, and hormonal shifts following childbirth. Research indicates that 1 to 2 per 1,000 women may develop this condition after delivery.
Prosecutors argue that Clancy, a former labor and delivery nurse, had planned the January 2023 killings. They claim she orchestrated her husband’s absence by having him collect medicine and dinner, thereby removing him from the scene.
Defense Presents Mental Health Context
Zeizel, who engaged with Clancy for over 35 hours across numerous sessions and studied her medical background, noted that she visited a perinatal clinic in December 2022. During the visit, she reportedly expressed feelings of having a “damaged brain” and considered suicide. She also exhibited paranoia, fearing others could hear her thoughts and that she might lose her children permanently.
“She was worried that her children would be removed from her and that she would never see them again,” noted Zeizel.
Even in a psychotic state, Zeizel explained Clancy could manage daily tasks like driving and using the internet. On the day of the incident, she performed routine activities, such as taking her daughter to a doctor, playing in the snow with her children, and browsing online for a pharmacy and a restaurant.
When asked if her ability to perform such tasks negated her psychotic state, Zeizel replied, “It does not.”
Challenges to Zeizel’s Testimony
Prosecutors questioned Zeizel’s objectivity during cross-examination, highlighting errors in his report and challenging his close involvement with Clancy’s defense. His collaboration with the defense team raised concerns about his impartiality.
Zeizel acknowledged the absence of documented instances where Clancy claimed to hear voices instructing her to commit suicide. However, she did express a desire to die in conversations with her caregivers.
Prosecutors also questioned the severity of Clancy’s suicide attempt, which left her paralyzed after she fell from a second-story window following the deaths of her children.
Reflection on Family and Memory
As the trial proceeded, Prosecutor Shanan Buckingham read statements from Tewksbury Hospital, where Clancy resides. These records included dates marking the anniversary of the tragic events and her children’s birthdays. While Clancy’s parents visited her and she interacted with other patients, hospital notes overlooked any mention of memorial actions for her children.
In defense, Reddington asked Zeizel about hospital records portraying Clancy as unbothered by her circumstances. Zeizel clarified that Clancy experiences fluctuating emotional states, indicating Clancy frequently reminisces about her children.
Zeizel emphasized, “She really loves them and misses them and thinks of them every single day, almost every moment of the day.”
If Clancy is convicted, she faces a life sentence without parole. A verdict of not guilty due to mental incapacity would lead to commitment to a state mental health institution.
If you or anyone you know needs support in a crisis, reach out by calling or texting 988, or visit 988Lifeline.org for assistance.

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