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.

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3:20 PM EDT

Defense attorney Kevin Reddington speaks after mistrial declared

Reddington spoke to reporters moments after a mistrial was declared in Clancy's murder trial.

"It's a very sad case," he said, calling Clancy "a fantastic, wonderful individual."

Referring to the Plymouth County district attorney, he added, "Cruz knows he was crushed."

Asked about Clancy's current state of mind, Reddington said his client was "not good."

"She grieves the loss of those three children, Cora, Dawson and Callan," he said, naming Clancy's three deceased children.

Reddington then turned his attention to the lone juror he said prevented the jury from reaching a unanimous verdict, saying Clancy was "robbed."

"I hope that guy can sleep well at night," he said.

Reddington said he is prepared for a possible retrial.

3:48 PM EDT

Plymouth DA defends prosecution of Lindsay Clancy

Plymouth County District Attorney Timothy Cruz defended his prosecution of Clancy after Judge Sullivan declared a mistrial moments earlier, following seven days of jury deadlock. Cruz said the evidence and the law merited first-degree murder charges.

"Children were murdered, and it's our job to seek justice," Cruz said outside court. "This is a case of three children who died a violent death at the hands of the person who was supposed to love them the most."

He called the online treatment of the trial prosecutors, Buckingham and Sprague, "disgusting," noting they are both mothers themselves.

He lamented that "criminals are being treated as victims, and victims are invisible."

Cruz declined to announce an immediate decision about retrying Clancy.

The comments come moments after Sullivan declared a mistrial, following a decision by a single Massachusetts Supreme Judicial Court justice denying the defense's emergency stay petition, which asked the court to compel the jury to continue deliberations or remove a lone holdout it claimed was biased against the defendant.

2:40 PM EDT

Court to reconvene at month's end

The judge set a date of Sept. 29 to determine next steps.

2:26 PM EDT

Judge declares mistrial after justice declines to impose emergency stay

Sullivan has declared a mistrial after the jury said repeatedly it was unable to reach a verdict.

The decision comes after a justice of the Massachusetts Supreme Judicial Court declined to impose an emergency stay filed by Clancy's defense attorney.

"I'm going to declare the jury is deadlocked, and I'm going to declare a mistrial," Sullivan said.

One juror appeared upset and put her head in her hands. Others look frustrated or defeated.

Reddington asked again for Sullivan to inquire of the holdout juror, but the judge declined.

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