Editor’s note: Coverage of this case is disturbing. Scroll with discretion.
PLYMOUTH, Mᴀss. — Lindsay Clancy was back in court Monday morning for the fifth week of her high-profile murder trial for strangling her three young kids.
The case is expected to wind down this week with closing arguments potentially slated to begin as early as Monday or Tuesday. The jury could start their deliberations this week.
Prosecutors are currently putting on a reʙuттal case to counter defense testimony that the 36-year-old Duxbury, Mᴀssachusetts mother should not be held criminally responsible because she was allegedly in the throes of severe postpartum psychosis and hearing voices when she carried out the slayings.
Psychiatrist Dr. Avram Mack – who began testifying Friday as the first reʙuттal witness – has claimed that Clancy wasn’t suffering from psychosis and she knew that what she was doing was wrong.
Monday morning, Clancy’s lawyer, Kevin Reddington, began cross-examining Mack seeking to discredit his expertise in testifying about criminal responsibility.
Judge William Sullivan let the jury go for the day during the testimony of forensic psychologist Dr. Kirk Heilbrun.
Heilbrun is slated to return to the witness stand Tuesday morning and one other reʙuттal prosecution witness is expected to testify after that.
The jury will likely hearing closing arguments on Wednesday morning followed by the jury instruction, the judge said after the jurors were gone for the day.
This suggests the jury could begin deliberations later Wednesday.
Lindsay Clancy’s lawyer asks for — and is denied — a mistrial after killer mom being a Catholic referenced during testimony
Lindsay Clancy’s lawyer, Kevin Reddington, just asked for a mistrial because of mention of the fact that Lindsay Clancy was a Catholic and that suicide was a mortal sin during the testimony of a prosecution witness.
Reddington said it was “intentional misconduct” by the prosecution that psychologist Dr. Kirk Heilbrun mentioned Clancy’s religion, heaven and other aspects about Catholicism. Reddington said this type of testimony was previously barred from coming into trial and it is prejudicial to Clancy.
Lindsay Clancy’s lawyer, Kevin Reddington, asked for a mistrial because of mention of the fact that Lindsay Clancy was a Catholic.AP
Prosecutor Jennifer Sprague said she didn’t ask Heilbrun any questions to elicit talk of religion and didn’t “think it was intentional on the part of the witness either.”
“I don’t think he was intentionally trying to inflame the jury,” Sprague said.
Judge William Sullivan denied the request for a mistrial but warned prosecutors that Heilbrun couldn’t raise the topic again and he told the jury to disregard that part of the testimony.
“The religion that the defendant was raised from is an inappropriate area of testimony,” Sullivan told the jury. “It is to be stricken. It cannot be considered. The witness’s understanding of Catholic teaching is immaterial, is irrelevant, it is to be disregarded.”
Judge William Sullivan suddenly ordered jurors to return to the jury room so they could take a “short recess,” after Lindsay Clancy’s lawyer objected during the testimony of a psychologist for the prosecution.
The moment came when psychologist Dr. Kirk Heilbrun mentioned that he asked Clancy — a Catholic — about the fact that suicide is a “mortal sin.”
Reddington quickly objected, prompting a sidebar and then the break.
Heilburn is expected to continue his testimony when they come back.
Forensic psychologist Dr. Kirk Heilbrun told the jury he believed that Lindsay Clancy strangled her three kids for altruistic reasons.
“When she decided she was going to put a stop to [her suffering] then the question was what to do about the kids,” Heilbrun — a prosecution witness — told the jury. “She didn’t want to leave them and she was convinced they would suffer [without her].”
Clancy told Heilbrun she told the children “Go to God, baby. Go to God,” as she killed them one by one in the basement.
“That was part of her expectation, that she and her children would be together in Heaven with God,” the psychologist said.
This portion of Heilbrun’s opinion mirrors what defense witness Dr. Phillip Resnick said last week — that he believed Clancy carried out an “altruistic filicide.”
But Heilbrun said he didn’t believe Clancy actually heard an auditory hallucination commanding her to carry out the killings and the suicide attempt — as she’s claimed.
Forensic psychologist Dr. Kirk Heilbrun said it was “so out of character” that Lindsay Clancy killed her three kids, he had to come up with possible motives.
He said the only two explanations he could come up with were: acute psychosis with command hallucinations or that she believed by killing the kids she was preventing them from suffering.
He disregarded the psychosis explanation because she only heard the voice once at the time of the slayings.
Forensic psychologist Dr. Kirk Heilbrun said it was “so out of character” that Lindsay Clancy killed her three kids so he had to come up with possible motives.via REUTERS
“She heard a voice that she never heard before and she never experienced it since but she only experienced it for the 18 minutes or so that it took to kill the children,” Heilbrun said. “That would be a very very unusual pattern or manifestation of how this kind of thing comes about.”
“It provides a convenient way of lessening your culpability,” the doctor added.
He also said her accounts of what the voice told her were “inconsistent.”
Lindsay Clancy is pictured with her family in pH๏τos shown during her trial.
As for the second explanation, Heilbrun said, “One might harm one’s own children if you thought that would prevent them from suffering.”
“This was a serious suicide attempt and she didn’t want the children to be separated from her and so they wouldn’t have to suffer after she was gone.”
Two mothers who had their own experiences with postpartum flew from Georgia to Mᴀssachusetts to support Lindsay Clancy at trial Monday.
Rachel Arthur and Katie Raub showed up outside the Plymouth courthouse wearing pink corsets as they said they hoped Clancy would be found not guilty and hoped her case would raise awareness about postpartum.
“I hope that she gets found not guilty,” Raub said. “I feel like postpartum psychosis is to blame here.”
“I hope that she gets the opportunity to have her story out,” Arthur said, noting she believes the disorder Clancy claims she suffered from “exists.”
The two women were returning home after just 24 hours of being in the Bay State.
Clancy wants a jury to find her not criminally responsible on the grounds she was experiencing postpartum psychosis and hearing voices when she strangled her three kids.
Court is back in session with forensic psychologist Dr. Kirk Heilburn back on the stand.
The prosecution has resumed questioning Heilburn about Lindsay Clancy’s mental health condition at the time she murdered her three children.
Clancy was seen wearing a beige knit cardigan on top of her pink blouse as court resumed.
Judge William Sullivan let the jury go for a lunch just before 1 p.m. and said Dr. Kirk Heilburn’s testimony would continue after the break around 2 p.m.
Lindsay Clancy’s lawyer will have the opportunity to question the doctor after the prosecution wraps up its inquiry.
Forensic psychologist Dr. Kirk Heilbrun just told the jury that Lindsay Clancy has post traumatic stress disorder from killing her kids.
Heibrun also said he believes Clancy has bipolar II disorder, a diagnosis that was difficult to come to because of all the various diagnoses that other doctors and providers had previously diagnosed her with.
Forensic psychologist Dr. Kirk Heilbrun testifying at Lindsay Clancy’s trial on Aug. 24, 2026.via REUTERS
He said the medical records showed Clancy had depressive episodes but he had a hard time finding manic episodes — with both depression and mania required to diagnose someone with bipolar.
He ultimately landed on bipolar II which is a less severe form of bipolar disorder. He said the records from the hospital she has been at for the last three years showed she responded positively to drugs meant to treat the condition, a factor that helped him come to his conclusion.
Psychologist Dr. Kirk Heilbrun detailed some of Lindsay Clancy’s “horrible intrusive thoughts,” including about killing herself and harming her kids.
Heilbrun — who interviewed Clancy in April 2026 — said her dark inner voice began telling her things like “your brain is damaged and you need to kill yourself,” in late November into early December 2022, months before she strangled her kids. The inner voice also occasionally told her to harm her kids, he explained.
Lindsay Clancy and defense attorney Kevin Reddington listening to Dr. Kirk Heilbrun’s testimony.Greg Derr/Pool The Patriot Ledger via AP
But Heilbrun said the important distinction was that the thoughts were an internal voice of her own rather than an external voice that would have been a hallucination and a sign of psychosis.
He noted she only ever described hearing a male’s voice on Jan. 24, 2023, the day of the killings.
Clancy’s lawyer claims she shouldn’t be found criminally responsible because she was experiencing severe postpartum psychosis and hearing a voice.
Forensic psychologist Kirk Heilbrun has been called as the second reʙuттal witness for the prosecution at Lindsay Clancy’s murder trial.
He is expected to testify about whether he believes Clancy was aware the killing of her three kids was wrong.
Clancy’s lawyer, Kevin Reddington, previously called his own expert witnesses who told jurors they believed the 36-year-old mother was suffering from severe postpartum psychosis and hearing voices at the time. They said she shouldn’t be found criminally responsible.
Roughly 60 people were lined up outside the courtroom in hopes of getting a spot inside the room for the high-profile trial.
The group, made up of mostly women who donned pink clothing, sat packed in five rows of seating inside the courtroom gallery.
Several jurors shook their heads and rolled their eyes as psychiatrist Dr. Avram Mack repeatedly said he couldn’t answer questions about Lindsay Clancy’s mental state.
During blistering cross-examination by Clancy’s lawyer, Kevin Reddington, Mack — who evaluated Clancy two times in April of this year — said “I can’t answer your question,” and “I’m not sure I understand your question.”
Roughly four jurors could be seen shaking their heads and rolling their eyes as Mack refused the answer the inquiry.
One male juror put his hand up to his head and closed his eyes as Mack said “I’m not sure how I can answer.”
Reddington has been pressing Mack about whether he thinks Clancy showed signs of postpartum psychosis when she strangled her three kids.
Reddington closed out his questioning by saying “I don’t care,” to Mack’s final answer. The moment drew light laughter from people in the courtroom gallery.
Psychiatrist Dr. Avram Mack admitted Lindsay Clancy was in a “serious psychiatric state,” as he maintained she should be held criminally responsible for strangling three kids.
“She was in a serious psychiatric state and she was suffering,” Mack said.
Still, Mack has maintained that Clancy knew what she was doing was wrong when she carried out the slayings.
Psychiatrist Dr. Avram Mack admitted Lindsay Clancy was in a “serious psychiatric state,” as he maintained she should be held criminally responsible for strangling three kids.Greg Derr/The Patriot Ledger
Clancy’s defense attorney, Kevin Reddington, wants a jury to find her not guilty by reason of insanity on the grounds she was in the throes of severe postpartum psychosis and hearing voices.
“I didn’t find any evidence of psychosis in her record,” Mack said. “She did not display psycH๏τic features.”
“I didn’t see any evidence of any psycH๏τic features throughout the medical record,” he said, as Reddington repeatedly grilled him about it.
Supporters of Lindsay Clancy and protesters against her both showed up outside of the Plymouth, Mᴀssachusetts, courthouse Monday morning as the fifth week of trial got underway.
Roughly ten women wearing pink shirts came to support Clancy as she is seeking to be found not criminally responsible for strangling her kids on the grounds she was in the throes of severe postpartum psychosis and hearing voices when she carried out the heinous acts.
A Lindsay Clancy supporter reads signs implying the guilt of Lindsay and Patrick Clancy held by a pair of demonstrators outside Plymouth Superior Court on Monday, Aug. 24, 2026, in Plymouth, Mᴀss.Josh Reynolds for NY PostA man outside of Plymouth Superior Court holding a sign claiming that Patrick Clancy is guilty of the crimes.Josh Reynolds for NY Post
But another group of around the same amount of people was also outside of the courthouse protesting Clancy, holding signs that championed justice for her three kids.
“Justice for Cora, Dawson and Callan,” one sign said. Other signs said: “The Only Innocents: Cora Dawson Callan.”
A group of women with a sign calling for jutice for Clancy’s three children.Josh Reynolds for The New York PostTwo women with signs implying that Clancy is guilty of murder.
Lindsay Clancy’s lawyer just laid into psychiatrist Dr. Avram Mack for smirking while he was testifying about different types of mental evaluations.
“What are you smiling for? This is not funny, sir,” defense attorney Kevin Reddington said to Mack.
Prosecutors objected and the judge sustained the objection.
Defense attorney Kevin Reddington cross-examines prosecution reʙuттal witness Dr. Avram Mack on Monday, August 24, 2026, at Plymouth Superior Court.Greg Derr/The Patriot Ledger
Reddington also accused Mack of having a confirmatory bias by the fact he was hired by prosecutors to evaluate Clancy’s criminal responsibility.
“You have a confirmatory bias … you had read all this material, you’ve spoken to prosecutors, you talked to [psychiatrist] Kirk Heilburn about how you’re going to go in and evaluate Lindsay Clancy right?” Reddington said.
“No,” Mack responded.
Reddington then asked Mack how much he makes as a forensic psychiatrist.
“It ranges… it can be several hundreds of thousands of dollars, it can be a few,” Mack said.
The jurors have been staring intently during the tense exchange between Reddington and Mack.
Lindsay Clancy’s lawyer, Kevin Reddington, drew laughs and gasps from people in the courtroom during his aggressive questioning of a psychiatrist.
Redding grilled Dr. Avram Mack about the fact that he only evaluated Clancy years after she killed her kids.
“There was a significant pᴀssage of time between January 2023 and when you saw her a few months ago,” Reddington said.
He then began to ask Mack about where he stayed in Mᴀssachusetts when he conducted the exams in April 2026.
“Did you stay in a H๏τel, in a van, where did you stay?” Reddington asked, drawing chuckles from the gallery.
Mack said he stayed in a private home and Reddington asked if another psychiatrist who joined Mack for the evaluations also stayed at the private home.
“I don’t know,” Mack answered, to gasps from courtroom attendees.
“You don’t know?” Reddington said.
“He didn’t stay there, that’s for sure,” Mack said.