Every entry below links to a primary source where one exists, and to contemporaneous reporting where it does not. Entries marked "no public filing" describe proceedings whose underlying documents were not located or are not available outside the courthouse. See Documents for what that involves.
January 24, 2023 — Cora, Dawson and Callan Clancy are killed at the family home in Duxbury. Lindsay Clancy falls from a second-story window and is seriously injured.
February 7, 2023 — Clancy is arraigned in Plymouth District Court, appearing remotely from her hospital bed, and pleads not guilty. Prosecutors describe the events of January 24 in open court.
September 15, 2023 — A Plymouth County grand jury returns indictments.
October 2023 — Clancy is arraigned in Superior Court.
October 24, 2023 — Search warrant materials are unsealed, detailing evidence taken from the Duxbury home and Clancy's internet search history.
2024 — The court orders a psychiatric examination of the defendant and approves DNA testing. No public filing.
March 19, 2025 — The New Yorker contests a court order requiring the magazine to turn over recordings of its interviews with Patrick Clancy, raising a First Amendment objection.
May 28 (?), 2025 — The court hears argument on the defendant's psychiatric records and the reporter's notes. No public filing.
February 20, 2026 — Clancy appears in a courtroom in person for the first time since her arrest, at Plymouth Superior Court for a pretrial hearing. Both of her arraignments had been conducted at Tewksbury State Hospital.
March 31, 2026 — The judge denies the defense request for a bifurcated trial, which would have separated the question of what happened from the question of criminal responsibility. No public filing.
July 20–24, 2026 — Jury selection.
July 20, 2026 — Patrick Clancy, the father of the three children, files two motions asking the court to restrict public display of the audio of the 911 call he placed, all photographs of the children including crime scene and autopsy photographs, and their clothing.
July 24, 2026 — The court grants the request in part. Media and members of the public in the courtroom are barred from recording, displaying or reproducing the 911 call audio and the autopsy photographs. Reporting on their contents remains permitted; jurors, witnesses and both trial teams retain full access.
July 27, 2026 — Opening statements. Patrick Clancy begins his testimony.
August 7, 2026 — The Commonwealth rests.
August 10, 2026 — The defense opens its case.
August 21, 2026 — The defense rests. The Commonwealth begins rebuttal.
August 24, 2026 — The judge denies a defense motion for a mistrial after a rebuttal witness raised the subject of religion, and reprimands the prosecution. No public filing.
August 26, 2026 — Rebuttal concludes.
August 27, 2026 — Closing arguments. The judge instructs the jury on the law. Deliberations begin.
August 28 – September 3, 2026 — Deliberations continue without a verdict on any count. By September 3 the jury has deliberated for six days. On September 3 the judge re-instructs the jury on reasonable doubt and directs it to continue.
September 4, 2026 — Defense attorney Kevin Reddington petitions the Massachusetts Supreme Judicial Court for an emergency stay to prevent a mistrial, asking the court to remove the holdout juror or to inquire whether that juror could follow the instruction on reasonable doubt. The SJC denies the petition. Reddington separately asks the trial judge to poll the jury on the lesser offenses of second-degree murder and manslaughter before declaring a mistrial. That request is also denied.
September 4, 2026 — The jury reports that it cannot reach a unanimous verdict. The foreperson's note reads: "It is with a heavy heart that we report we are unable to come to a unanimous decision, and we will not be able to." Reporting indicated the vote was 11 to 1; the direction of the split was not announced in open court. Clancy remains in custody at Tewksbury State Hospital, where she has been held since 2023. Whether she is retried is a decision for the Plymouth County District Attorney's office; District Attorney Timothy J. Cruz declined to say whether his office will seek a new trial.
NOTE: A mistrial is not an acquittal. The charges stand and the Commonwealth may retry the case. Because the jury reached no verdict on any count, nothing was decided: not the murder charges, not the lesser offenses, and not the question of criminal responsibility.