Written by: Kathryn Wood
I. A County That Already Knows the Story
On September 4, 2026, Judge William Sullivan declared a mistrial in the case of Lindsay Clancy, ending the proceedings after five weeks of testimony and a week of deliberation. Clancy, a 36-year-old former nurse, was accused of strangling her three young children at her family’s home in Duxbury, Massachusetts, on January 24, 2023, and was tried in Plymouth County Superior Court. She pleaded not guilty to three counts of first-degree murder, arguing that she was not criminally responsible because she had been struggling with postpartum psychosis at the time. The jury could not reach a unanimous verdict. According to the defense, the split was reportedly 11-to-1, with a lone holdout blocking acquittal.
For Clancy, the mistrial is not an ending but a reset. It returns her case to zero, and the Commonwealth has signaled that it may try her again. A second trial, however, cannot simply be run back like the first, because Plymouth County is no longer what it was. The trial drew national attention, spawned online conspiracy theories, and pushed postpartum psychosis into public conversation. Every prospective juror in a second trial would be drawn from that same community, and that is what turns an ordinary retrial into a hard constitutional question: whether Plymouth County can still seat a jury capable of judging her fairly.
II. Is Retrial Allowed?
The Commonwealth is free to retry Clancy. A mistrial declared because a jury cannot agree is the textbook exception to double jeopardy. Under the Supreme Court case, United States v. Perez, a court may discharge a deadlocked jury when there is a manifest necessity to do so, and that discharge is no bar to a later trial. A deadlock resolves nothing; it simply stops the clock rather than closing the case.
III. The Impartial Jury Problem
The Sixth Amendment and Article 12 of the Massachusetts Declaration of Rights guarantee a trial by an impartial jury, but not by an uninformed one. Under the Supreme Court case, Irvin v. Dowd, a juror need not be totally ignorant of a case’s facts. It is enough that the juror can set aside any impression and render a verdict on the evidence. Massachusetts follows the same rule in Commonwealth v. Toolan. Whether Plymouth County residents know about the case, then, does not answer the question. The question becomes whether enough of them can set that knowledge aside and decide the single contested issue, Clancy’s criminal responsibility, on the evidence alone.
That is where this retrial grows difficult. Ordinary pretrial coverage leaves prospective jurors with impressions; voir dire is built to surface those impressions and set them aside. What the Clancy pool carries is not an impression, but a number. These prospective jurors will know that a previous jury heard all the evidence and came one vote shy of acquitting; that eleven of twelve were ready to spare her, and that a lone holdout, who the defense publicly blamed, stood in the way. The danger is not that these jurors have heard too much, it is that they may have heard the answer, and no instruction can make them un-hear it.
IV. Potential Remedies
Massachusetts law offers two remedies. Under Toolan, a court first asks whether pretrial publicity has made the jury pool presumptively prejudiced. If not, whether the defendant can show actual prejudice among the jurors seated. Voir dire and a change of venue answer to those steps.
Voir dire comes first. Questioned one at a time, a prospective juror can be asked about what she has heard, what she believes, and whether she can set it aside. But voir dire is built to filter out impressions, not knowledge of a reported tally. A juror can sincerely promise to disregard what she has read and still know that eleven others in the same seat had previously concluded that the case leaned Clancy’s way.
When voir dire cannot produce an impartial jury, the fallback is to relocate the trial. Rule 37(b)(1) permits a change of venue when prejudice is so great that a fair trial in the community is impossible. This is a last resort, ordered only on a solid foundation of fact that the defendant must build. But a transfer solves only half the problem: the 11-to-1 split was national news, and no venue is far enough to outrun it.
V. Conclusion
The law makes this retrial easy to authorize and hard to seat. Double jeopardy poses no obstacle, and neither remedy is beyond the court’s reach. What neither can do is erase the fact that sets this case apart: prospective jurors will not just carry impressions of Lindsay Clancy into the box; they will carry a number, the knowledge of a lone holdout. Whether Plymouth County can seat a fair jury may turn less on what its jurors have heard but whether the court will believe them when they promise to set it aside.
Sources:
Carmel Wroth, et al., With Jury Deadlocked, Judge Declares a Mistrial in Lindsay Clancy’s Murder Case, NPR (Sept. 4, 2026), https://www.npr.org/2026/09/04/nx-s1-5950421/lindsay-clancy-trial-verdict-mistrial.
Catherine Caruso & Tyler Piccotti, Who Is Lindsay Clancy? All About the Trial of the Duxbury Mother Accused of Killing Her 3 Children, Biography (Sept. 4, 2026), https://www.biography.com/crime/a71603379/who-is-lindsay-clancy-duxbury-murder-trial.
Commonwealth v. Toolan, 951 N.E.2d 903, 913-14 (Mass. 2011).
Irvin v. Dowd, 366 U.S. 717, 723 (1961).
Mass. R. Crim. P. 37(b)(1).
Mass. Const. pt. 1, art. XII.
Lauren del Valle, Retired Judge Says Lindsay Clancy’s Defense Could Have an Advantage in a Retrial, CNN (Sept. 5, 2026), https://www.cnn.com/2026/09/04/us/mistrial-lindsay-clancy-hung-jury.
U.S. Const. amend. VI.
United States v. Perez, 22 U.S. 579, 580 (1824).