Dr. Avram Mack is no longer employed by Nemours Children’s Health after his fiery testimony in Lindsay Clancy’s murder trial.
The Delaware-based psychiatrist, who took the stand Monday as a prosecution witness, resigned that same day from the health system where he worked, the employer confirmed Friday. “Dr. Avram Mack is no longer employed by Nemours Children’s Health,” the organization stated. Nemours declined to provide additional details, noting that “employment decisions are confidential.”
Mack, a Columbia-trained doctor who did not evaluate Clancy until April 2026, found himself at the center of one of the trial’s most tense moments during cross-examination by Clancy’s attorney Kevin Reddington. The lawyer pressed Mack on whether the former labor and delivery nurse was experiencing psychosis when she killed her three children on January 24, 2023.
While Mack agreed that Clancy, 36, was “in a serious psychiatric state and she was suffering” at the time of the killings, he maintained that she should be held criminally responsible for the deaths of Cora, 5, Dawson, 3, and 8-month-old Callan. The children were strangled in the basement of the family’s Duxbury, Mass. Home. Mack said he found no evidence “of psychotic features” in her record.
The exchange between Mack and Reddington grew heated as the defense attorney challenged the psychiatrist’s demeanor on the stand. “What are you smiling for?” Reddington snapped. “This is not funny, sir.”
Clancy faces life in prison without parole if convicted of murder in the deaths of her three children. The jury could alternatively find her not guilty by reason of insanity, which would result in commitment to a psychiatric facility until she is deemed no longer a threat to herself or others.
The psychiatrist’s testimony came as the closely watched case neared its conclusion. Jurors ended their second day of deliberations Friday without reaching a verdict in the trial that has drawn national attention to issues of maternal mental health and postpartum psychiatric disorders.
The case has particularly focused on Clancy’s mental state in the months leading up to the killings and whether she was capable of understanding the wrongfulness of her actions. Prosecutors have emphasized that Clancy planned the killings and had the awareness to attempt suicide afterward, while the defense has argued she was suffering from severe postpartum depression and psychosis.
Jurors will return to court in Plymouth, Mass. On Monday to continue their deliberations.