Prospective jurors in the triple-murder trial of Massachusetts mother Lindsay Clancy were subjected to a comprehensive and personal questionnaire covering mental health history and relationships with individuals involved in the legal or mental health systems. Over 300 potential jurors were questioned and excused before an 18-person pool was finalized for the case.

Candidates were required to disclose whether they or any family members had been diagnosed with postpartum depression, anxiety, or bipolar disorder, or had any experiences with the mental health system that might affect their impartiality. They were also asked if they could remain open-minded regarding the defense's anticipated insanity plea and if they could fairly review graphic evidence, including autopsy photos of Clancy's three young children. Inquiries also extended to any relationships with expected witnesses.

Clancy's defense attorney, Kevin Reddington, stated that the goal of these detailed questions was to identify fair individuals for the jury. Following the questionnaire, each candidate underwent private interviews with the defense, prosecution, and Judge William Sullivan. Several potential jurors were reportedly excused after becoming emotional or admitting they could not render a fair judgment, with a box of tissues provided in the courtroom for those overcome by the case's harrowing details.

The jury selection process experienced several disruptions, including three jurors requesting removal earlier in the week. One young man expressed difficulty handling the case, and two additional jurors were excused on Thursday. Clancy, who is wheelchair-bound and expected to argue she was experiencing postpartum psychosis during the killings, closely observed the selection process.

The final jury pool consists of 12 women and six men, though only 12 will deliberate on the evidence. As jury selection concluded, it was revealed that Clancy's ex-husband, Patrick Clancy, has remarried. Patrick Clancy, who discovered the children's bodies in January 2023, filed a motion to restrict public access to his 911 call recording and crime scene or autopsy photographs of the children during the trial. Judge Sullivan granted this motion on Friday, prohibiting media from recording or disseminating these specific items.

The defense also filed a last-minute motion to prevent first responders from testifying, arguing that their repeated testimony, based on grand jury statements, would be unfairly prejudicial. The judge indicated he would confer with attorneys before each witness testifies to determine the necessity of their testimony.

Opening statements were slated to begin Monday. Clancy is accused of strangling her children, Cora, 5; Dawson, 3; and 8-month-old Callan, with exercise bands before a suicide attempt left her paralyzed. The trial is expected to focus on whether jurors believe Clancy was suffering from postpartum psychosis, exacerbated by medication, or if she was lucid and intentionally planned the killings. The prosecution is expected to argue that she was capable of methodical planning, including orchestrating her husband's absence from the home on the day of the deaths.