Judge Declares Mistrial in Lindsay Clancy Murder Trial After Jury Deadlock

Judge William Sullivan formally declared a mistrial in the case of Lindsay Clancy on Friday evening after the jury failed for the third time to reach a verdict.

The mistrial followed an extraordinary final day where the defense made a last-ditch appeal to Massachusetts’ top court regarding a juror it claimed was blocking a not guilty verdict. The jury had deliberated for five weeks after hearing testimony from more than eighty witnesses. The prosecution and defense did not dispute the basic facts of the case.

In January 2023, Clancy fatally strangled her three children, Cora, who was five, Dawson, who was three, and Callan, who was eight months old, in the basement of the family’s home in Duxbury, Massachusetts. She then cut her neck and wrists and jumped from a second-floor window. The central question for the jury was whether Clancy, a labor-and-delivery nurse who had been in the midst of a well-documented mental-health crisis, should be exempt from criminal responsibility under Massachusetts law.

This exemption would apply if she lacked the capacity to understand her actions were wrong or was unable to stop herself. In Massachusetts, prosecutors bear the burden of proving criminal responsibility beyond a reasonable doubt. The judge granted a request from the defense to include involuntary manslaughter as a possible verdict, offering jurors an option between convicting Clancy of murder and finding her not guilty by reason of insanity.

The jury ultimately found no compromise. Outside the courthouse, pink-clad Clancy supporters held placards reading "COMPASSION BEFORE JUDGMENT" and "LISTEN TO MOTHERS," while a smaller counter-presence carried signs such as "REMEMBER THE REAL VICTIMS" and "KIDSLAUGHTER."