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The courtroom drama was already escalating before the arrest, with the nine-woman, three-man jury informing Judge William Sullivan Tuesday morning that members had been unable to reach the unanimous decision required for either a conviction or an acquittal.
The panel had heard more than 80 witnesses and reviewed more than 300 exhibits during weeks of emotionally wrenching testimony centered not on whether Clancy killed her children, which her lawyers acknowledge, but whether she was legally criminally responsible when she did it.
Clancy, 36, a former labor and delivery nurse, is accused of strangling her three children — 5-year-old Cora, 3-year-old Dawson and 8-month-old Callan — with exercise bands inside the family’s Duxbury home in January 2023.
Her defense maintains she was suffering from severe postpartum psychosis and was detached from reality when the killings occurred, arguing that years of punishment would be inappropriate for a mother they contend was overwhelmed by a devastating psychiatric condition.
Prosecutors have offered a dramatically different picture, arguing that Clancy understood exactly what she was doing, deliberately arranged for her then-husband Patrick Clancy to leave the house on errands and intentionally murdered the children before trying to take her own life.
Clancy has pleaded not guilty by reason of lack of criminal responsibility, leaving jurors to determine whether prosecutors proved murder or manslaughter or whether her mental illness legally prevented her from appreciating the wrongfulness of her actions.
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