Judge declares mistrial in Lindsay Clancy triple murder case after jury deadlocks
A Massachusetts judge declared a mistrial after jurors deadlocked following six days of deliberations on whether Lindsay Clancy was criminally responsible for the 2023 deaths of her three children.
Jury deadlock and mistrial ruling
Judge William Sullivan declared a mistrial in the trial of Lindsay Clancy after jurors failed to reach a unanimous verdict following five weeks of testimony. Deliberations spanned more than six days in Massachusetts before the panel reported its third deadlock regarding whether Clancy was criminally responsible for the deaths of her three young children. Defense attorney Kevin Reddington stated in court that eleven of the twelve jurors favoured an acquittal on the grounds of mental illness. Reddington asked the judge to dismiss the single holdout juror for failing to apply legal instructions on reasonable doubt, but Sullivan refused to intervene.
I do not think I have any other choice than to declare a mistrial.
Emergency appeal to the Supreme Judicial Court
Immediately after the mistrial declaration, defense attorneys attempted to halt the ruling by filing an emergency appeal with the Massachusetts Supreme Judicial Court. Defense lawyer Dana Goldblatt and Reddington appeared by video link alongside Clancy before Justice Dalila Argaez Wendlandt. Goldblatt argued that one juror refused to follow required legal instructions and that Sullivan had not taken proper measures to address the situation. Justice Wendlandt took the matter under advisement, stating that she needed time before delivering a decision on the petition.
- Lindsay Clancy enters a treatment program for postpartum depression.
- Clancy spends five days admitted to a psychiatric facility near Boston.
- Cora, Dawson, and Callan Clancy are strangled at the family home in Duxbury.
- Judge William Sullivan declares a mistrial following a third jury deadlock.
Competing arguments over postpartum psychosis
The proceedings focused on Clancy's mental condition on 24 January 2023, when Cora, 5, Dawson, 3, and Callan, 8 months, were killed in Duxbury. The defense did not dispute that Clancy strangled the children, arguing instead that she suffered from severe postpartum psychosis and clinical depression. Defense attorneys presented evidence of worsening symptoms following the birth of her third child, multiple medical visits, and a five-day voluntary psychiatric stay near Boston in early 2023. Clancy stated that an auditory hallucination of a male voice instructed her to kill her children and herself. After the strangulations, Clancy cut her neck and wrists and jumped from a second-floor window, surviving with paraplegia.
Prosecutor Jennifer Sprague argued that Clancy maintained criminal responsibility and planned the killings with calculation. The prosecution cited digital evidence showing online searches regarding medication doses and the travel time required for her husband, Patrick Clancy, to complete local errands. During closing arguments, Sprague told jurors that Clancy remained a functional adult who understood right from wrong, noting that Patrick Clancy discovered the children upon returning home and summoned emergency responders.
Procedural options for Plymouth County prosecutors
Following the mistrial, Plymouth County prosecutors face three procedural alternatives. The Commonwealth may seek a retrial before a newly selected jury on the first-degree murder charges, negotiate a plea agreement with the defense, or dismiss the case entirely. If prosecutors decide to retry the case, Clancy will remain confined to the psychiatric hospital where she is currently housed.
