The Lindsay Clancy trial reached its closing arguments on Thursday as her defense lawyer urged jurors to find her not guilty by reason of insanity.
Clancy, 36, has admitted killing her three young children at her home in Duxbury, Massachusetts, in January 2023.
Her defense argues that she suffered from severe postpartum psychosis at the time and could not understand the nature or wrongfulness of her actions.
Prosecutors, however, say Clancy deliberately carried out the killings and understood that what she was doing was wrong.
Defense Points to Postpartum Psychosis
Defense attorney Kevin Reddington told jurors that Clancy’s mental state had deteriorated for months before the deaths.
He highlighted her treatment history and struggles with suicidal thoughts after the birth of her third child.
“Her mind was gone,” Reddington told the jury.
He argued that medical treatment and medication played a role in her deteriorating condition. He also pointed to testimony that Clancy later said she heard a man’s voice telling her she would lose her chance if she did not act.
According to the defense, that evidence supports the claim that Clancy experienced a serious psychiatric disorder when she killed her children.
Prosecutors Challenge Insanity Defense
Assistant District Attorney Jennifer Sprague agreed that Clancy had experienced mental health problems.
However, she told jurors that the central question was whether Clancy understood that killing her children was wrong.
Sprague argued that Clancy carefully created an opportunity to carry out the killings.
Shortly before the incident, Clancy sent her husband, Patrick, out to collect food and visit a pharmacy.
She also used her phone to estimate how long he would be away.
Prosecutors say those actions show that Clancy planned the killings rather than acting under an uncontrollable psychotic episode.
Husband Returns to Tragic Scene
Patrick Clancy briefly spoke with his wife by phone while he was at the pharmacy.
When he returned home, he found Clancy outside with serious injuries.
She told him that she had attempted suicide.
Patrick then asked about the children. Clancy told him they were in the basement.
He called 911 and went downstairs, where he found the children.
Clancy had strangled Cora, 5, Dawson, 3, and Callan, 8 months, with exercise bands.
She then cut herself and jumped from a second-story window. The attempt left her paralyzed.
Disputed Claims About a Voice
The trial also focused heavily on Clancy’s claim that she heard a man’s voice before the killings.
Patrick, relatives and a hospital chaplain testified that Clancy later described hearing a voice that pressured her to act.
Sprague challenged that account.
She argued that Clancy did not mention hearing the voice during her phone conversation with Patrick while he was away.
The prosecutor also questioned why Clancy began describing the voice only after she reached the hospital.
Jury Begins Deliberations
After both sides delivered their closing arguments, Judge William Sullivan instructed the 12 jurors on the law.
The jury then selected a foreperson and began deliberating.
Sullivan warned jurors that they faced a difficult task.
The panel can consider several possible outcomes, including first-degree murder, second-degree murder, manslaughter or a finding that Clancy lacked criminal responsibility because of mental illness.
Possible Life Sentence
A conviction for first-degree murder could send Clancy to prison for life without parole.
If jurors find her not guilty because of a lack of criminal responsibility or insanity, authorities would instead commit her to a state psychiatric hospital for evaluation.
The case has drawn comparisons with Andrea Yates, the Texas woman who killed her five children in 2001. A court later found Yates not guilty by reason of insanity after evidence showed she suffered from severe postpartum psychosis.
A Closely Watched Mental Health Case
The Clancy case has also renewed national discussion about postpartum mental health and the treatment available to women experiencing severe psychiatric symptoms after childbirth.
For prosecutors, however, the broader debate does not decide the case.
For the defense, Clancy’s mental health history remains central to understanding what happened.
The jury must now decide whether Clancy understood that her actions were wrong when she killed her three children.
