The fate of US mother Lindsay Clancy now rests with a Massachusetts jury, deciding if she is guilty of first‑degree murder for killing three of her children.

For five weeks the trial has captivated the country as Clancy’s lawyers maintain she suffered postpartum psychosis when she attacked her children with exercise bands and later attempted suicide by jumping out a window. She does not deny killing her two sons and daughter.

Prosecutors portray a deliberate act: the killer consciously chose her victims. The jury could find her guilty of first‑degree murder, or of lesser charges such as second‑degree murder or involuntary manslaughter—still, each conviction leads to prison time.

A first‑degree murder conviction carries a mandatory life sentence without parole in Massachusetts. An insanity verdict would send Clancy to a psychiatric hospital, likely for life.

Closing arguments were delivered before deliberations began. Defence counsel Kevin Reddington reiterated the postpartum psychosis claim, describing the mental illness as a disease that absolved her of intent, and criticized the prosecution for downplaying her suicide attempt.

Prosecutor Jennifer Sprague acknowledged Clancy’s mental illness but argued she was still aware of right and wrong at the time of the killings. She highlighted that the defendant’s histories indicated hidden thoughts about harming her children.

The jury comprised nine women and three men. They finished the first day of deliberations Thursday and will reconvene Friday.

For further context, see Key moments in the Lindsay Clancy trial.