Closing arguments in the Lindsay Clancy trial are expected Thursday. After that, twelve people go into a room with three counts of first-degree murder and no clock.
The honest answer to how long they will be in there is that nobody knows. But the structure of this particular case tells you more than a guess would, and it points away from a fast verdict.
The short answer
There is no time limit on jury deliberations in Massachusetts. A jury can return in an hour or sit for three weeks. What we can say is that this case has a set of features that historically slow juries down, and almost none of the features that speed them up.
Why a quick verdict is unlikely here
Nobody is arguing about what happened. In most murder trials the jury spends its first stretch working through whether the defendant did it. Here that question is gone. Clancy has never denied killing Cora, Dawson and Callan, and the defense stipulated to the forensic evidence. That removes the easy part and leaves only the hard part.
The hard part is a legal test, not a fact. Jurors have to apply the standard from Commonwealth v. McHoul: whether mental illness left Clancy without substantial capacity either to appreciate the wrongfulness of her conduct or to conform her conduct to the law. That is an unfamiliar framework, it has two independent prongs, and jurors will be working from the judge’s instructions rather than from anything in their ordinary experience. Juries routinely ask to have instructions reread in insanity cases.
Six experts contradicted each other. Three for the defense, three for the Commonwealth, with competing diagnoses of postpartum psychosis, bipolar II, and major depression, and days of testimony to sort through. Deliberations that turn on expert credibility tend to be long ones.
There are three separate counts. The jury must reach a unanimous verdict on each child.
The burden runs the unfamiliar way. Most jurors arrive assuming a defendant claiming insanity has to prove it. In Massachusetts the opposite is true: once the defense raises lack of criminal responsibility, the Commonwealth must prove she was criminally responsible beyond a reasonable doubt. Absorbing that inversion takes time, and it is the single most important thing the defense needs jurors to understand.
What the verdict options are
The exact verdict slip gets settled when Judge William Sullivan instructs the jury. Based on the charges, the realistic options are first-degree murder, second-degree murder as a lesser included offense, and not guilty by reason of lack of criminal responsibility. The defense has also asked for an involuntary manslaughter instruction built on a theory of involuntary intoxication from over-prescribed medication; no ruling on that request has been reported.
Each path leads somewhere very different:
- First-degree murder carries a mandatory sentence of life without the possibility of parole, plus automatic review by the Supreme Judicial Court. We covered that in what happens if she is found guilty.
- Second-degree murder is life with parole eligibility, with the judge setting the minimum between fifteen and twenty-five years.
- Not criminally responsible sends her into civil commitment under G.L. c. 123, § 16 rather than home, explained in this piece.
What a hung jury would mean
If the jurors cannot agree unanimously, the judge will typically give them a further instruction encouraging them to keep working. If they still cannot agree, he declares a mistrial. The charges survive, and the Plymouth County District Attorney decides whether to try the whole case again to twelve new people.
This is not a remote possibility. Massachusetts saw a high-profile murder trial end in a hung jury in 2024, and the retrial produced a very different result. Andrea Yates, the case this one is constantly compared to, was convicted at her first trial in Texas and found not guilty by reason of insanity at her second on substantially the same evidence. Two juries, two answers.
How you will know
Verdicts arrive with almost no warning. The jury sends a note, the court notifies the parties, and everyone reassembles within the hour. Notes asking for testimony read back or instructions repeated usually signal a jury working carefully rather than one about to return.
We will cover the verdict the day it lands. Until then: the final day of testimony, what each side is expected to argue in closings, a review of the defense strategy, the evidence both ways, and the running timeline.
Common questions
How long will the Lindsay Clancy jury deliberate?
There is no way to predict it and no time limit. The case has several features that tend to lengthen deliberations: a contested legal standard, six conflicting experts, three separate counts, and a burden of proof that runs opposite to what most jurors expect.
When do deliberations start?
After closing arguments, expected Thursday, August 27, and after Judge Sullivan instructs the jury on the law.
Does the verdict have to be unanimous?
Yes, on each of the three counts.
What happens if the jury cannot agree?
The judge declares a mistrial and prosecutors decide whether to retry the case. The charges are not dismissed.
Can the jury find her guilty of a lesser charge?
Second-degree murder is the traditional lesser included option in a first-degree murder case, carrying life with parole eligibility after a minimum the judge sets between fifteen and twenty-five years.