A Massachusetts courtroom heard disturbing new details Thursday as prosecutors painted a picture of calculated violence in the case of Lindsay Clancy, the Duxbury mother accused of killing her three young children inside their own home.
Cora, 5, Dawson, 3, and 8-month-old Callan lost their lives on January 24, 2023, in what authorities say was no accident and no act of a woman lost entirely to mental illness — but rather a series of deliberate, hands-on killings carried out one child at a time.
The weapon of choice was something found in countless American homes: exercise bands. Prosecutors allege Lindsay used them to strangle each of her children, personally maintaining pressure around their necks until each one stopped breathing.
That detail — that she allegedly held the bands tightly rather than tying them off and walking away — sits at the core of the prosecution’s argument against an insanity defense.
When Patrick Clancy discovered his children in the basement, he was already on the phone with a 911 dispatcher. His anguished cry — “She killed the kids!” — rang out as officers were still descending the stairs toward the scene.
What Patrick found chilled investigators. Each child had an exercise band around their neck.
But in the brief moments before first responders reached the basement, Patrick had already managed to remove every single one.
Prosecutors seized on that fact. The speed with which the bands came off, they argued, told a story of its own.
Had the bands been knotted and left in place, removal would have taken time and effort.
Instead, they came free almost immediately — suggesting, according to prosecutors, that they had simply been pulled tight by hand and released, not secured in any way that would indicate Lindsay had walked away and left fate to take over.
By the time police entered the basement, each band lay beside the child it had been used to kill, according to court filings.
“The brief time between finding each child and the fact that Mr. Clancy was able to remove each band so quickly” formed a cornerstone of the prosecution’s theory, the filings state.
Prosecutors used that evidence to request that Patrick’s 911 call be admitted at trial, arguing the recording is essential to establishing what happened in those final moments. Court TV first reported on the filing.
Lindsay, now 35, was a nurse before her arrest. Her defense attorneys have been upfront: they are not contesting that she killed Cora, Dawson, and Callan. What they are contesting is her mental state when she did it.
The defense maintains that Lindsay was buried under severe postpartum psychosis and had been improperly medicated by the physicians responsible for her care. Her team plans to ask the jury to find her not guilty by reason of insanity.
The trial is set for July, and the admissibility of the 911 call could prove pivotal in how jurors ultimately weigh the competing narratives.
Adding another layer to the case, both Lindsay and Patrick have independently filed civil lawsuits targeting the medical professionals who treated her. Both allege that her doctors failed to identify what was wrong and responded with the wrong treatments.
After killing her children, Lindsay jumped from a window of the family home, suffering serious injuries.
The prosecution’s latest filings represent a direct strike at the foundation of the insanity defense — framing the manner of the killings themselves as evidence that Lindsay Clancy knew exactly what she was doing.
