Commonwealth v. Clancy

Where it standsNo verdict. The jury could not agree, and a mistrial was declared on September 4, 2026.

1. The Commonwealth must prove · First

   Whose burden is it? The Commonwealth’s

   Did the Commonwealth prove the elements of murder?

   Not in dispute

   A burden is the job of proving something, so before anything else it matters whose job that is. Here it’s entirely the Commonwealth’s, which is what Massachusetts calls the prosecution. They have to prove two things, which are this question and the one under it, and they have to prove both beyond a reasonable doubt, the highest standard the law has.

   She doesn’t have to prove anything, and that includes proving she was insane. The judge told the jury so in these words: “The defendant has no burden to prove a lack of criminal responsibility.” This is the part most arguments about the case get backwards. People assume it was on her to prove she was insane. It was on them to prove she was criminally responsible.

   Elements are the separate pieces a crime is made of, and the prosecution has to prove every one of them. In most murder trials this is the whole fight. In this one it wasn’t a fight at all. The defense didn’t dispute what she did. They even offered to stipulate to it, which means formally agreeing something is true so that nobody has to prove it.

   The Commonwealth turned that offer down and put the evidence in front of the jury anyway. So this step is marked as not in dispute, and the real argument is all in the second thing they had to prove.

   If yes

2. The Commonwealth must prove · Second

   The jury stopped here

   Did the Commonwealth prove she was criminally responsible?

   No verdict

   Criminal responsibility is the legal name for what most people would call the insanity question. It asks if she can be held answerable for what she did, given the state of her mind that day. This is the only thing the two sides really fought over. The trial ran for about six weeks and nearly all of the evidence went to this.

   The Commonwealth said she was severely depressed but not psychotic, and that she made a series of deliberate choices. The defense said she was in postpartum psychosis. To prove she was responsible, the Commonwealth had two ways of doing it, which are the two cards inside this one. This is also as far as the jury got. They couldn’t agree on it, and that’s why it says no verdict.

   Whichever way they try, it has to be proved beyond a reasonable doubt. That doesn’t mean beyond every possible doubt, but it’s a long way past “probably.” And all twelve jurors have to agree on the answer, whichever answer it is.

   A yes on either one is enough

   The first way

   Was she free of any mental disease or defect?

   This is the first way the Commonwealth could prove she was criminally responsible. They could show that at the time of the killings she had no mental disease or defect at all. That phrase is a legal one, not a medical one. It doesn’t have to match any official diagnosis, and it’s the jury that decides if she had one, not the doctors.

   If the Commonwealth proved this, that was enough, and the other question in this card wouldn’t matter.

   or

   The second way

   If she had one, did she keep substantial capacity?

   This is the second way, in case the jury thought she did have a mental disease or defect. Having one doesn’t make a person not responsible all by itself. The Commonwealth could still succeed by proving she kept what the law calls substantial capacity, and that has two parts. One is that she could appreciate that what she was doing was wrong. The other is that she was able to make herself follow the law.

   They had to prove she kept both. If her illness took away either one, she isn’t responsible. And “appreciate” is a stronger word than “know.” It means really understanding that something is wrong, not just being aware that it’s illegal.

   If proved

   Yes

   Criminally responsible

   Then the jury reaches the counts

   Four ways it can land

   If the jury had found she was criminally responsible, they still wouldn’t have been done. That finding only opens the door to the actual charges, which were three counts of first-degree murder. On those the jury would have had four options, which were first-degree murder, second-degree murder, manslaughter, or not guilty.

   This is the only point where the evidence about what she did, and how, would really start to matter, because that’s what separates one of those options from the next.

   If not proved

   No

   Not criminally responsible

   Then the verdict is

   Not guilty by reason of insanity

   If the Commonwealth didn’t prove she was criminally responsible, the verdict is not guilty by reason of insanity. A lot of people hear that as walking free, and it isn’t. What generally happens next is that the district attorney asks the court to commit her, which means ordering her held in a mental health facility or at Bridgewater State Hospital.

   A commitment gets reviewed every so often, but it can be renewed again and again with no limit, for as long as she is still ill and still dangerous. The judge told the jury it could last for the rest of her life.

   If the jury cannot agree

3. What actually happened

   Neither. The jury never answered the question

   Then

   A mistrial, declared on September 4, 2026

   This is what actually happened, and it’s neither of the two endings that question leads to. The jury deliberated for thirty-eight hours over seven days and sent the judge three notes. They ended up split eleven to one. A verdict has to be unanimous, so eleven to one counts for exactly as much as no agreement at all. That’s called a hung jury.

   On September 4, 2026, the judge declared a mistrial, which is a trial that ends without a verdict. A mistrial decides nothing. She wasn’t found guilty and she wasn’t found not guilty. The charges are still there and the case can be tried again in front of a new jury. The defense has asked the court to rule that a second trial isn’t allowed, and that’s due to be argued on November 2, 2026.