Lindsay Clancy trial: Judge declares mistrial after emergency request denied

The defense blamed one juror for the deadlock.

Last Updated: September 4, 2026, 4:42 PM EDT

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, ended Friday in a mistrial after seven days of juror deadlock.

Clancy's defense attorney, Kevin Reddington, claimed throughout that trial that 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, argued 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 oversaw the trial, set a court date of Sept. 29, 2026, to reconvene and determine next steps.

See below how the final days of the trial unfolded.

Watch a special edition of "20/20," "The Trial of Lindsay Clancy," airing Friday, Sept. 4, at 9/8c on ABC, streaming the next day on Disney+ and Hulu.

Disney is the parent company of ABC News and Hulu.

Sep 03, 2026, 9:51 AM EDT

Lindsay Clancy's family in attendance as day 6 of deliberations get underway

Lindsay Clancy, in a brown sweater over a green top, chatted quietly with defense attorney Kevin Reddington prior to the jury entering. Her parents and sister are sitting in their usual seats behind her, in the second row.

Judge William Sullivan asked whether jurors had read or seen anything that would impact their ability to be fair and whether they had anything to bring to his attention.

Jurors said no and filed out to resume deliberations, beginning a 31st hour.

Sep 03, 2026, 9:21 AM EDT

Court resumes for 6th day of deliberations

Jurors are back in court and will continue to deliberate for a sixth day on Thursday after signaling they were at an impasse for a second time on Wednesday.

Sep 02, 2026, 4:21 PM EDT

Jury sent home for the day after 2nd deadlock

A fifth day of deliberations is over, as Judge William Sullivan sent the jury home for the evening, asking the group to report back Thursday morning.

"I know it has been a long day," Sullivan said. "I'm going to ask you to come back tomorrow morning."

Jurors were sent home not long after signaling they were deadlocked for a second time. The judge instructed them at that point to keep working toward a unanimous verdict.

The jury has deliberated for about 30 hours total so far, indicating twice that they were at an impasse. Both times, the judge sent them back to continue deliberations.

Court will resume at 9 a.m. on Thursday.

Sep 02, 2026, 2:58 PM EDT

Jury returns to deliberations after reporting 2nd deadlock

Lindsay Clancy and defense attorney Kevin Reddington looked on as jurors filed out of the courtroom to continue deliberations.

Reddington then asked Clancy if she was all right, and she nodded in the affirmative.

This is the fifth day of deliberations and nearly 30 hours in.

Judge William Sullivan sent copies of the charge into the jury room so the nine women and three men could refer to it.

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