Lindsay Clancy will not face a verdict for the deaths of her three young children after a Plymouth County judge declared a mistrial Friday, Sept. 4.

Judge William Sullivan ended the case at Plymouth Superior Court after the 12-person jury reported for a third time that it could not reach a unanimous decision. The jury of nine women and three men deliberated for seven days following a nearly six-week trial.

Clancy, 36, a former labor and delivery nurse from Duxbury, was charged with three counts of first-degree murder in the strangling deaths of her daughter Cora, 5; son Dawson, 3; and infant son Callan, 8 months. The children were killed at the family's home on Jan. 24, 2023.

Clancy does not deny killing her children. Her defense attorney, Kevin Reddington, argued she was experiencing postpartum psychosis worsened by a combination of psychiatric medications. According to testimony from her former husband Patrick Clancy, she had been prescribed at least 13 medications by five providers in the months before the killings.

In the weeks before Jan. 24, 2023, Clancy called a suicide hotline twice, spent five days at McLean Hospital and sought help from two perinatal clinics, ABC7 reported. The killings occurred less than three weeks after her discharge.

Prosecutors, led by Plymouth County Assistant District Attorney Jennifer Sprague, argued Clancy acted deliberately. Sprague told jurors during closing arguments on Aug. 27 that Clancy sent her then-husband out to pick up dinner and go to CVS to buy herself time alone with the children.

"Those kids were her protective factor. Those kids were keeping her from ending her misery. And so she had to remove the protective factor. … It was a choice," Sprague said in her closing argument.

More than 80 witnesses testified over 21 days. Patrick Clancy was the trial's first witness, taking the stand on July 27. He testified that he returned home to find his children in the basement, unresponsive, with exercise bands around their necks, NBC News reported.

The jury first reported a deadlock on its fourth day of deliberations, Tuesday, Sept. 1. Sullivan sent jurors back. On Wednesday, Sept. 2, they reported a second deadlock. Sullivan then read them the Tuey-Rodriguez instructions, a Massachusetts legal procedure asking jurors to give deliberations one more attempt.

On Thursday, Sept. 3, the jury foreperson sent a note claiming a single juror "refuses to follow the law" on the judge's instruction about reasonable doubt. Reddington asked Sullivan to dismiss that juror. Sullivan declined, saying he did not feel it was proper to side with one faction of the jury over another.

The livestreamed trial drew national attention. Hundreds gathered outside the Plymouth courthouse in support of Clancy during the proceedings, according to NBC News.

Clancy, who attempted to take her own life after killing her children and remains paralyzed from the waist down, will stay in custody at Tewksbury Hospital while the Plymouth County District Attorney's Office decides how to proceed. Options include a retrial, a plea deal or dropping the charges.

Brad Bailey, a Boston defense attorney and former prosecutor not involved in the case, told the Associated Press that defense lawyers would likely explore whether a resolution short of retrial is possible. Bailey also noted prosecutors sometimes decline to retry cases because of the cost and the risk of the same outcome.

No next court date has been announced.

If you are having suicidal thoughts, call or text 988 to reach the 988 Suicide & Crisis Lifeline.