Lindsay Clancy’s murder trial is back in a Massachusetts courtroom on Monday, Aug. 17, after not convening on Friday.

Judge William Sullivan announced the trial would break for the weekend on Thursday, Aug. 13, wrapping up a third week of testimony.

Clancy, 36, is facing murder charges in the January 2023 strangulation deaths of her three children – Cora, 5; Dawson, 3; and Callan, 8 months – at the family’s Duxbury, Massachusetts, home. She has pleaded not guilty to all three counts.

Prosecutors allege she planned the killings by sending her husband to pick up takeout food and medicine, then strangling the children with exercise bands while he was gone. Afterward, Clancy cut her wrists and neck and jumped out of a second-story window, leaving her paralyzed.

Clancy’s defense is arguing that she lacks criminal responsibility – also known as an insanity defense – because she was suffering from postpartum depression and psychosis at the time of the killings.

Here’s what to know on Monday, Aug. 17.

Lindsay Clancy trial so far: Key moments

So far, a jury of 18 has heard from more than 60 witnesses. The prosecution is continuing to present its case. After it rests, Clancy’s attorney Kevin Reddington will present the defense.

Among the notable witnesses who have testified so far is Clancy’s ex-husband Patrick Clancy.

He took the stand in the first two days of testimony, recounting his former wife’s mental health decline in the months before the killings.

Patrick Clancy testified that Lindsay Clancy repeatedly sought care from psychiatrists and medical professionals for her worsening insomnia and postpartum depression and anxiety from September 2022 to January 2023. She was hospitalized at least three times in that period, including once for lack of sleep and twice for suicidal thoughts.

Two other witnesses that will prove significant for both sides were Dr. Jennifer Tufts, a psychiatrist, and Rebecca Jollotta, a psychiatric nurse practitioner. Lindsay Clancy was treated by both separately but at times concurrently in the months prior to Jan. 24, 2023.

They both testified about prescribing Lindsay Clancy medications, including benzodiazepines, antidepressants and antipsychotic medicines, to help her symptoms.

Both said Lindsay Clancy, a longtime labor and delivery nurse, appeared knowledgeable but apprehensive about taking new medications. Reddington has alleged that Lindsay Clancy was overmedicated before the children’s deaths.

How did Lindsay Clancy plead?

Lindsay Clancy has pleaded not guilty to all three charges of murder. Her defense does not dispute the facts of the children’s deaths, but argued she is not criminally responsible, according to The Patriot Ledger, part of the USA TODAY Network.

Clancy’s defense under Massachusetts law is called a lack of criminal responsibility, more commonly known as not guilty by reason of insanity. Reddington argues Clancy is not guilty because she was suffering from postpartum depression and psychosis at the time of the children’s deaths.

According to a definition read in court by Judge William Sullivan, a person is not criminally responsible for their conduct if they have “a mental disease or defect, and as a result of that mental disease or defect, lacks the substantial capacity either to appreciate the criminality or the wrongfulness of her conduct or to conform her conduct to the requirements of the law.”

Reddington argued in opening statements that Clancy heard a male voice telling her to commit the killings. He painted Clancy as a doting mother who “tried very hard to get the help she needed.”

Clancy has been held at Tewksbury Hospital, a facility in Tewksbury, Massachusetts, for court-ordered mental health treatment since May 2023, according to The Patriot Ledger.

How to watch Lindsay Clancy trial live today

Day 14 of Lindsay Clancy’s murder trial is expected to begin after 9 a.m. ET.

Watch the live stream from the Plymouth, Massachusetts, courthouse below:

The Patriot Ledger, part of the USA TODAY network, is also providing live updates from inside the courtroom.

Melina Khan is a national trending reporter for USA TODAY. Keep up with her on X @melinakh and Instagram @bymelinakhan.