Lindsay Clancy Trial: Defense Grills Prosecution Shrink Over Pay and Past Rejections

The Lindsay Clancy murder trial hit a rough patch Monday for the prosecution, as its own rebuttal witness, psychiatrist Dr. Avram Mack, spent hours under cross-examination from defense attorney Kevin Reddington. Clancy, 34, of Duxbury, Massachusetts, is accused of strangling her three children — 5-year-old Cora, 3-year-old Dawson, and 7-month-old Callan — with exercise resistance bands inside the family's Summer Street home on January 24, 2023. She faces three counts of murder and three counts of strangulation, has pleaded not guilty, and her attorneys are pursuing an insanity defense centered on severe postpartum psychosis and psychiatric overmedication.

Reddington didn't ease in. He started with prior cases where courts had ruled Mack unqualified to testify, then moved to money — Mack testified he pulls in several hundred thousand dollars a year doing expert witness work. Asked to define confirmatory bias and then asked point-blank if he'd shown it evaluating Clancy, Mack said no. He testified he met with Clancy in 2026, three years removed from the killings, having already reviewed defense records, DCF documentation, and medical history — the evaluation itself ran roughly eight hours across two doctors and multiple days, including a full day of testing. He also acknowledged the diagnostic split in the case: Drs. Heilbrun, Resnick, and Zeizel diagnosed bipolar 2, another doctor diagnosed bipolar 1, and postpartum psychosis, he noted, isn't a recognized DSM diagnosis at all.

Despite the rough cross, prosecutors are still expected to argue Clancy understood what she was doing regardless of her mental state. After the killings, Clancy allegedly attempted suicide by jumping from a second-story window and is now paralyzed from the waist down. Her husband, Patrick Clancy, was running errands at the time and has since relocated to Manhattan. The trial continues in Plymouth Superior Court.

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