The defense blamed one juror for the deadlock.
The murder trial of Lindsay Clancy, the Massachusetts mom who killed her three young children while in the family's home on Jan. 24, 2023, has ended in a mistrial after seven days of juror deadlock.
Clancy's defense attorney, Kevin Reddington, claims she was suffering from postpartum psychosis when she strangled her children and attempted to take her own life. The prosecutors, Jennifer Sprague and Shanan Buckingham, argue that Clancy -- who pleaded not guilty to three counts of first-degree murder -- is criminally responsible for her children's deaths.
Judge William Sullivan, who is overseeing the trial, has set a court date of Sept. 29, 2026, to reconvene and determine next steps.
Watch a special edition of "20/20," "The Trial of Lindsay Clancy," airing Thursday, Sept. 4, at 9/8c on ABC, streaming the next day on Disney+ and Hulu.
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Jurors in the Lindsay Clancy trial reported to the judge on Tuesday that they were unable to reach a verdict, prompting Judge William Sullivan to ask them to continue deliberating.
The jury has been deliberating so far for about 18 hours total across four days.
Jurors returned Tuesday for a fourth day of deliberations in the trial of Lindsay Clancy, the Massachusetts woman charged with murdering her three children.
Jurors have been weighing the evidence for about 17 hours so far with no verdict. They sent no notes on Monday.
Judge William Sullivan greeted jurors on Tuesday and asked them whether they had read, seen or heard anything that would impact their ability to be fair and impartial. They indicated nothing.
Clancy, wearing a green shirt, chatted with defense attorney Kevin Reddington before the judge took the bench. Her parents and sister were seated behind her.
Clancy appeared to watch jurors enter. None appeared to look at her.
Jurors have been sent home for the day after a second full day of deliberations.
The jury has been deliberating for about 16 hours total over a span of three days.
They are expected to continue deliberating on Tuesday.
Jury deliberations resumed Monday in the trial of Lindsay Clancy.
This is the second full day of deliberations and now beginning the eleventh hour of deliberations.
"Good morning, your honor," Clancy said when the judge greeted her.
Jurors filed in with no discernible expression.
