The grieving dad and husband of Lindsay Clancy, the mom accused of strangling the couple’s three young kids while postpartum, is expected to testify on her behalf at her upcoming trial — in which jurors will face the “most emotionally disturbing and challenging” case imaginable.

Clancy, a 35-year-old former nurse, is slated to go on trial next week in the heartbreaking case alleging she strangled her three young kids with exercise bands and then failed in a suicide attempt, paralyzing herself in 2023. Jury selection is scheduled to begin Monday morning.

Jurors are expected to face what her defense says will be a harrowing legal case, which will include testimony for the defense by Patrick Clancy – Lindsay’s husband and the father of the three murdered children, according to a report by People.

“The impact of this case, which, in my decades of trying cases, is probably the most emotionally disturbing and challenging, I think it’s going to have an impact on jurors more so than the usual we deal with,” Kevin Reddington, Clancy’s criminal defense attorney, said.

Patrick’s expected testimony on the side of the defense is in line with Reddington’s defense strategy. The attorney is expected to admit that Lindsay committed the heinous act of killing her children — Cora, 5, Dawson, 3, and Callan, 8 months — in the basement of their Duxbury, Mass., home on Jan. 24, 2023, and will instead argue she should be found not guilty by reason of insanity, since she was in the throes of severe postpartum psychosis.

Patrick, along with his wife Lindsay, has maintained that the doctors who treated her misdiagnosed and overmedicated her, causing her to hallucinate voices telling her to kill her kids. Both have filed lawsuits against the doctors who treated her.

Reddington had asked Judge William Sullivan at a final hearing in Plymouth, Mass., Monday to give him extra challenges to dismiss prospective jurors during the selection process due to the tragic nature of the case.

Sullivan said he would consider the motion and rule on it in the coming days. Prosecutors did not oppose the request.

The judge said he planned to seat 18 jurors, presumably including a handful of alternates, since the case is expected to last between six and eight weeks and because of the unique circumstances it will deal with.

There are also 200 potential witnesses, besides Patrick, who could be called to testify at trial, though that list and the length of the trial are likely to be significantly cut down given that Reddington said he would stipulate — or agree — to the facts of the horrific killings.

Sullivan shot down Reddington’s last-minute request to call 16 women to testify about their own experiences with postpartum depression.

The judge agreed with prosecutors that allowing that testimony would cause a mini-trial within a trial and the expert witnesses expected to be called by both sides can speak to the effect that postpartum can have on someone anyway.

Clancy allegedly carried out the slayings before she cut her neck and wrists and threw herself out of the second-story window of her home, paralyzing herself. She has attended court hearings in a wheelchair.