Lindsay Clancy Trial: Mistrial Motion Denied, Then the Real Testimony Started

There was a near-derailment at the end of testimony Monday. In the Lindsay Clancy murder trial at Plymouth Superior Court, defense attorney Kevin Reddington moved for a mistrial Monday after the concept of "mortal sin" surfaced for the second time from the prosecution's side. Judge William Sullivan denied it — but told jurors to disregard any comments about sin or religiosity, and made clear the prosecution needed to rein in its own witness before he got back on the stand.

That witness was Dr. Kirk Heilbrun, a forensic psychologist testifying for the prosecution's rebuttal. Clancy, 34, of Duxbury, Massachusetts, is charged with three counts of murder and three counts of strangulation in the deaths of her children — 5-year-old Cora, 3-year-old Dawson, and 7-month-old Callan — allegedly strangled with exercise resistance bands inside the family's Summer Street home on January 24, 2023. She's pleaded not guilty, and Reddington is arguing insanity: severe postpartum psychosis compounded by psychiatric overmedication.

Heilbrun didn't dispute that Clancy has bipolar II. What he disputed was the psychosis framing. His read: this was a serious suicide attempt paired with altruistic filicide, and peritraumatic dissociation — the trauma response during the act itself — isn't psychosis. He testified she understood the legality of her actions and could have conformed her conduct to the law, which in a courtroom is the whole ballgame for criminal responsibility. He called her calling her husband back mid-event unusual, but not evidence of self-interest — evidence of a mother already grieving.

Clancy allegedly attempted suicide afterward by jumping from a second-story window and is now paralyzed from the waist down. Husband Patrick Clancy was running errands at the time and has since relocated to Manhattan.

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