The Lindsay Clancy trial reached its twentieth day on Tuesday, and for the first time the finish line came into view. Judge William Sullivan indicated from the bench that closing arguments could be delivered as soon as Thursday, which would place the case in the jury’s hands before the week is out.

A warning for readers: the testimony in this case involves the deaths of three young children and is difficult material.

Where Things Stood Tuesday

The prosecution spent the day working through the last of its rebuttal witnesses. Two experts took the stand.

Forensic psychologist Kirk Heilbrun testified first, returning to complete the account he had begun a day earlier. He was followed by Gregory Saathoff, a forensic psychiatrist affiliated with the FBI and the third and final rebuttal witness the prosecution intended to call.

Saathoff was still on the stand walking jurors through his analysis of Clancy when the court day ended. His testimony will resume when proceedings continue.

The Fallout From Monday’s Disruption

Tuesday’s session followed a tense Monday afternoon that nearly derailed the trial altogether.

During his testimony, Heilbrun referenced a discussion he had with Clancy touching on the idea that suicide constitutes a mortal sin. Defense attorney Kevin Reddington objected immediately and then moved for a mistrial, arguing that religious material had no place in front of this jury.

Sullivan refused to grant the mistrial. He did, however, strike the remark from the record in forceful terms and made clear to jurors that it carried no relevance and was to be set aside entirely.

The exchange left an unmistakable marker for the appellate record, and it underscored how carefully both sides have been forced to navigate questions of faith, guilt and moral framing in a case that is fundamentally about a defendant’s state of mind.

The Charges and the Competing Accounts

The underlying facts are not seriously disputed. What they mean is.

Prosecutors allege that on 24 January 2023, at the family home in Duxbury, Massachusetts, Clancy strangled her three children: Cora, aged five, Dawson, aged three, and Callan, eight months old. According to the prosecution’s account, she first arranged for her then-husband Patrick to leave the house on errands.

Afterward, she went out a second-story window. The fall left her paralyzed from the waist down.

The defense does not contest that Clancy caused her children’s deaths. Its argument is that she cannot be held criminally responsible for them, because she was in the grip of bipolar disorder and postpartum psychosis when they occurred.

That distinction is the entire case.

Why Rebuttal Witnesses Matter Here

When a defendant raises a lack of criminal responsibility, the structure of the trial changes. The defense presents its own mental health experts, and the prosecution is then permitted to call rebuttal witnesses to respond directly to those conclusions.

That is what Heilbrun and Saathoff were doing. Their function was not to establish what happened on 24 January but to offer the jury a competing clinical interpretation of Clancy’s mental state, and to challenge the methodology and conclusions of the experts the defense put forward.

For jurors, this creates an unusual burden. They are being asked to weigh dueling professional assessments of an internal condition that cannot be photographed, measured or replayed, and to decide which reading of a mind they find more persuasive.

What the Jury Will Have to Decide

Under Massachusetts law, the question is not simply whether Clancy performed the acts alleged. It is whether, at the time, mental illness deprived her of the capacity to appreciate the wrongfulness of what she was doing or to conform her behavior to the requirements of law.

The two possible outcomes diverge sharply. A first-degree murder conviction carries a life sentence with no possibility of parole. A finding that she was not criminally responsible would instead result in commitment to a state psychiatric facility.

There is no middle path that splits the difference in any comfortable way, which is part of what has made this case so wrenching to follow.

A Case That Has Drawn National Attention

The trial has become a focal point for a broader conversation about maternal mental health, one that extends well beyond the courtroom in Plymouth County.

Postpartum psychosis is rare, and it is clinically distinct from the postpartum depression that receives far more public discussion. Its rarity is precisely why it remains poorly understood by the general public, and why expert testimony in cases like this one carries such weight with jurors who are unlikely to have encountered the condition before.

Advocates watching the proceedings have argued that the case exposes gaps in how new mothers are screened, medicated and monitored. Others caution against drawing broad lessons from a single prosecution. Both perspectives have found voice in the coverage surrounding the trial.

What Comes Next

The remaining schedule is compressed. Saathoff must finish his testimony. Once the prosecution formally rests its rebuttal, the court will move toward jury instructions and closing arguments, which Sullivan signaled could arrive Thursday.

After that, deliberations begin, and the decision passes to twelve people who will have spent four weeks absorbing some of the most difficult evidence a courtroom can produce.

A Note on Support

If you or someone you know is struggling emotionally or experiencing thoughts of suicide, the 988 Suicide and Crisis Lifeline is available at any hour by call or text at 988, with an online chat option as well. For guidance on mental health resources, including support related to perinatal and postpartum conditions, the National Alliance on Mental Illness HelpLine can also be reached for information and referrals.