As Lindsay Clancy’s triple murder trial enters its fifth and potentially final week, witnesses for the prosecution’s rebuttal are set to take the stand.

Dr. Avram Mack, a psychiatrist called by the Commonwealth, will resume his testimony Monday morning.

Clancy has admitted to killing her kids Cora, 5, Dawson, 3, and Callan, eight months, in January 24, 2023.

That night, she’d asked her now-ex husband Patrick Clancy to pick up a medicine at CVS for Cora and takeout at a restaurant nearby. When Patrick Clancy returned home, he found his then wife sprawled on the ground, paralyzed from a two-story fall from their bedroom window, and the children dead and dying in the basement.

Lindsay Clancy has pleaded not guilty on the grounds that she was suffering from postpartum psychosis at the time and can’t be held criminally responsible.

Her attorney Kevin Reddington called experts who diagnosed her with the condition, saying that Clancy heard a voice the night of the killings that told her to kill the children, then herself. More severe and rare than postpartum depression, postpartum psychosis is estimated to impact one out of every 500 women after birth.

On Friday, jurors heard from the defense’s last witness Dr. Phillip Resnik, a doctor who testified for Andrea Yates’ successful insanity defense. Yates killed three of her children in 2001. After initially being found guilty, Yates argued she had postpartum psychosis during a retrial. She has been in a mental hospital ever since.

“She was clearly psychotic on that day,” he said of Clancy, telling the jury that the auditory hallucinations she heard the day of the killings convinced her what she was doing was morally right.

“In her mind,” he said, “she believed that she would be doing her children a favor by having them go to heaven with her, rather than remain on earth without her doing the mothering.”

But Mack, the first rebuttal witnesses, disagreed, saying that Clancy instead had major depressive disorder and showed that she could act lawfully and rationally in the hours leading up to the killings. Clancy drove Cora to and from a doctor’s appointment that morning, built a snowman with the children, and researched children’s medicine.

He also pointed to a phrase Clancy told him she’d said to her children as she strangled them: “Go to God.”

To Mack, the utterance showed that Clancy knew her kids were innocent and that what she was doing was wrong.

“Not only was it a hope for the children,” he said, “it was a description of the situation.”

On Friday, Reddington drew attention to when the two doctors had examined his client. Resnik saw Clancy about four months after the killings; Mack examined her a few months ago. He also questioned Mack’s credentials in the area of postpartum mental health.

After Mack finishes his testimony, the prosecution is expected to call a few more expert witnesses.

Judge William Sullivan had guessed that closing arguments could happen Tuesday or Wednesday, suggesting that he would be open to giving both sides some time in between the end of testimony and closing.

Afterwards, Sullivan will instruct the jury. Currently, there have been 18 jurors sitting for the proceedings, which will be randomly narrowed down to 12 for the actual deliberations.

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