Lindsay Clancy Trial Declared Mistrial After Jury Deadlocks on Murder Charges

It brings questions of postpartum psychosis, severe overmedication, and criminal responsibility into sharp focus as prosecutors and defense attorneys weigh their next legal steps under the oversight of Judge William Sullivan.

Mistrial Declared After Deadlocked Jury Deliberations

The legal proceedings came to a halt when Judge William Sullivan declared a mistrial after the jury communicated for a third time in seven days that they remained deadlocked without a unanimous decision. Prior to the ruling, defense attorneys mounted an emergency appeal to the Massachusetts Supreme Judicial Court. They argued that a juror was refusing to follow judicial instructions and was blocking a consensus, though that petition was ultimately rejected.

A mistrial does not mean an acquittal. The three murder charges against Clancy remain entirely active. The 36-year-old is accused of strangling her children—Cora, 5; Dawson, 3; and Callan, 8 months—on January 24, 2023, at their home in Duxbury, Massachusetts. On the night of the tragedy, her husband found her in the backyard suffering from severe self-inflicted wounds to her neck and wrists after she jumped from a second-story window. That suicide attempt left her partially paralyzed.

Competing Legal Arguments Over Postpartum Psychosis

The core of the trial centered on whether Clancy possessed criminal responsibility at the time of the killings. Defense attorney Kevin Reddington argued that his client suffered from auditory hallucinations, intrusive thoughts, and severe postpartum psychosis exacerbated by overmedication. Forensic psychiatrist Phillip Resnick testified during the trial that Clancy felt like a marionette told by a male voice to kill her children and take her own life.

By contrast, Assistant District Attorney Jennifer Sprague urged the jury to convict, asserting that Clancy acted with deliberate intent and calculated precision. The prosecution pointed out that Clancy sent her husband out on errands just before the attacks and asked for an attorney once hospitalized. “You know, with moral certainty, that she is culpable,” Sprague stated during arguments.

Under Massachusetts law, a person is not criminally responsible if a mental disease or defect deprives them of the substantial capacity to appreciate the wrongfulness of their conduct or to conform their behavior to the law. The jury faced five potential outcomes: first-degree murder, second-degree murder, manslaughter, not guilty by reason of lack of criminal responsibility, or simply not guilty. Because the panel could not agree, none of those verdicts were entered.

Current Status and Next Steps for Prosecution and Defense

Clancy remains interned at Tewksbury Hospital, a state-run psychiatric facility in Massachusetts, where she receives round-the-clock psychiatric treatment and constant monitoring due to an ongoing risk of suicide highlighted by court-appointed experts like psychologist Kirk Heilbrun.

The Plymouth County District Attorney’s Office now faces several distinct paths. Prosecutors can schedule a brand-new trial with a fresh jury, negotiate a plea agreement with the defense, or drop the charges entirely.