Forensic psychologist testifies Lindsay Clancy is 'criminally responsible' for children's deaths

August 25, 2026 - 19:04

A forensic psychologist returned to the witness stand on Tuesday and delivered key testimony in the case against Lindsay Clancy, stating that she was criminally responsible for the deaths of her three children. Dr. Kirk Heilbrun told the court that Clancy possessed a "moral awareness" and understood the "wrongfulness" of her actions at the time of the killings.

The testimony is seen as a major point for prosecutors, who are working to counter the defense's argument that Clancy was in the grips of severe postpartum mental illness and psychosis. NBC News legal analyst Misty Marris weighed in on the significance of the questioning, noting that the prosecution is trying to establish that Clancy was not so detached from reality that she could not distinguish right from wrong.

Heilbrun's statements focus on whether Clancy had the capacity to form intent, a central question in the case. The defense has argued that Clancy, a former nurse, was overwhelmed by mental health struggles and did not have the presence of mind to understand the consequences of her actions. The prosecution, however, is pushing back on that narrative, using expert testimony to suggest that Clancy's behavior in the days and hours before the incident showed planning and awareness.

The case has drawn widespread attention, with many following the legal arguments over how mental health is weighed in criminal proceedings. The trial continues as both sides present their expert witnesses.