After nearly 40 hours of deliberation, a jury in Plymouth, Massachusetts, was unable to reach a unanimous verdict in the murder trial of Lindsay Clancy, who is charged with strangling her three children in 2023. The deadlock, confirmed on Friday, resulted in a mistrial, marking a rare outcome in serious criminal cases that require unanimous decisions.
The trial, which lasted four weeks, featured intense and emotional testimony, including expert witnesses presenting conflicting opinions about Clancy’s criminal responsibility. Clancy’s defense attorney, Kevin Reddington, argued that she was suffering from postpartum psychosis at the time of the alleged killings, raising an insanity defense. The 12-member jury, composed of nine women and three men, struggled to reach consensus, with reports indicating one juror dissented from the others’ positions.
Judge William Sullivan made multiple efforts to break the impasse, including delivering a “dynamite charge” — a set of instructions aimed at encouraging jurors to reconsider their views and achieve unanimity. Despite these efforts, the jury informed the court that they remained deadlocked “with a heavy heart.”
Legal experts note that hung juries in criminal trials are uncommon, occurring in roughly one out of every 20 cases. The requirement for unanimous verdicts in serious criminal matters was upheld by a 2020 Supreme Court ruling affirming the Sixth Amendment’s guarantee of a jury trial. Some scholars describe the unanimity requirement as rooted in historical tradition, with the high standard designed to prevent wrongful convictions that could result in loss of liberty.
Jury behavior scholars suggest that deadlocks are most likely in cases where evidence is complex and does not clearly favor either side. The Clancy case fits these criteria, with the emotional nature of the testimony and conflicting expert assessments complicating jurors’ assessments. Observers of jury dynamics also highlight that jurors often take their responsibilities seriously once sworn in, and that service can enhance civic engagement beyond the trial itself.
With the mistrial declared, the prosecution now must decide whether to retry Clancy. If they opt to proceed with another trial, a new jury will be selected to hear the case anew.