The judge presiding over the murder trial of Lindsay Clancy, William F. Sullivan, previously oversaw a similar case involving another mother accused of killing her children, which resulted in a retrial after his evidentiary ruling was overturned.
Sullivan, 69, who was appointed to the bench in 2014, is currently presiding over the case of Clancy, a former nurse accused of murdering her three children in Duxbury, Massachusetts, in 2023. Prosecutors contend Clancy intentionally killed her children, Cora, five, Dawson, three, and eight-month-old Callan, by strangling them with exercise bands. Clancy has admitted to the killings but pleaded not guilty by reason of insanity, citing postpartum psychosis. Her defense seeks commitment to a mental health facility rather than a prison sentence.
In 2022, Sullivan presided over the trial of Latarsha Sanders, another Massachusetts mother who killed her two sons. Sanders was convicted of murder and sentenced to two life terms without parole after a jury found she had stabbed her sons nearly 80 and more than 20 times, respectively, in what she described as a Voodoo ritual.
However, the Massachusetts Supreme Judicial Court unanimously vacated Sanders's conviction in August, ruling that Sullivan had erred by excluding relevant medical records that showed Sanders's psychosis and ill mental state. The court stated that the exclusion of this mental illness evidence constituted prejudicial error and granted Sanders a new trial.
Similar to Clancy's defense, Sanders's attorney had argued an insanity defense, claiming the mother was in a psychotic episode during the murders and thus lacked criminal responsibility. Sanders's defense attempted to introduce medical records indicating a diagnosis of schizophrenia spectrum and other psychotic disorders following the killings, supported by the findings of a clinical neuropsychologist who concluded Sanders was "grossly psychotic" and suffering "hallucinations."
Prosecutors objected to the introduction of these records in Sanders's trial, arguing they were irrelevant. Judge Sullivan agreed and blocked the evidence from being presented to the jury. The Supreme Judicial Court's decision means Sanders will face a new trial, although it is unclear if Sullivan will preside over it. Activists have noted disparities in media coverage and public sympathy between the Sanders and Clancy cases, questioning if race and socioeconomic status played a role.
Sullivan earned his law degree from Boston College Law School and previously worked as an assistant district attorney and a defense attorney before his judicial appointment. He will also determine Clancy's sentence if she is convicted.