Judge declares mistrial when mother strangles all 3 of her children
By SyndicatedNews True Crime | SNN.BZ
A judge in Plymouth County, Massachusetts, declared a mistrial in September 2026 in the murder case of Lindsay Clancy, the Duxbury mother accused of killing her three children on January 24, 2023. The trial had opened in July. Neither side disputed that the children died at her hands. The fight was over criminal responsibility.
Cora Clancy was 5, Dawson was 3, and Callan was about 8 months old. Prosecutors said Clancy, then a labor-and-delivery nurse, asked her husband, Patrick Clancy, to pick up takeout and children’s medicine, and that she checked how long the trip would take before he left. He was gone less than an hour. When he returned he found her outside the house after a fall from a second-floor window. The children were in the basement. Cora and Dawson were pronounced dead that night. Callan died in a hospital days later.
The state charged Clancy with three counts of murder, plus strangulation and assault counts. At arraignment, prosecutors said she had planned the deaths, created the time alone, and acted with deliberate premeditation. She pleaded not guilty by reason of insanity. The fall left her paralyzed. She appeared in early proceedings from a hospital bed.
Her mental-health history was the center of the defense. In the months after Callan’s birth she had been treated for anxiety and a worsening postpartum crisis, had been prescribed a long series of medications, and had admitted herself to McLean Hospital for several days. Patrick Clancy later sued providers, arguing she was misdiagnosed and overmedicated. The defense said that on the day of the deaths she was in psychosis and heard a voice telling her the children would suffer if she were gone.
Prosecutors treated that account as incomplete. They pointed to medical records and argued she did not report hearing voices until after the children died. They also pointed to the errand, a check-in call while Patrick was out, and what they described as ordinary behavior toward family that afternoon. In their telling, the timing showed planning, not a sudden break.
Patrick Clancy was the prosecution’s first major witness. Days after the deaths he had publicly forgiven his wife. On the stand he called her a loving mother and described her telling him, as she deteriorated, that she had thoughts of harming the children. Jurors heard his 911 call. The couple later divorced. He has said that if he could redo the weeks before January 24, he would have pressed for her to be kept in psychiatric care.
Jurors were taken to the former family home in Duxbury so they could see the layout the lawyers were arguing over: the basement, the upstairs bedroom, the window. The visit was meant to test both stories — the prosecution’s account of a planned interval alone, and the defense’s account of a woman too ill to form criminal intent.
On September 4, 2026, Judge William Sullivan declared a mistrial after jurors were unable to reach a unanimous verdict. A mistrial is neither an acquittal nor a conviction, and the charges remain pending. On October 1, the judge denied a defense request for a required finding of not guilty. A hearing on post-trial motions, including a defense double-jeopardy argument, was scheduled for November 2, 2026; no retrial date had been confirmed as of October 21. These proceedings do not establish criminal guilt.
The case drew national and international coverage because it sits on a line courts often struggle to draw: a mother with a documented postpartum psychiatric crisis, and a prosecution theory that the same facts show calculation. Coverage has focused on that dispute, on Patrick Clancy’s shift from public forgiveness to a lawsuit against her doctors, and on what the mistrial leaves unresolved. The children — Cora, Dawson, and Callan — remain the fact neither side contests.
