08/22/2026
Lindsay Clancy was likely mentally ill when she killed her three children, Elizabeth Bruenig argues. But the jury may still find her legally sane “because the legal standard for insanity diverges from the clinical understanding of mental illness,” she writes.
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“In the months prior to what Clancy’s defense team has described as a psychotic break, she had repeatedly sought psychiatric help,” Bruenig writes. Her lawyers have argued that she was suffering from postpartum psychosis, a psychiatric condition that occurs after 0.1 to 0.2 percent of deliveries in women who don’t have a history of mental illness.
Clancy’s desperate diary entries dated from the days and weeks before the murders recount symptoms in line with the condition. Clancy, her ex-husband, and their attorneys have filed a medical-malpractice lawsuit against the psychiatrists who treated her.
But “the jury may deny her insanity plea because the clinical understanding of postpartum psychosis—like those of a host of disorders—does not fit squarely within the legal definition of insanity,” Bruenig continues.
Regardless of the evidence, judges and juries regularly treat insanity defenses with skepticism. One expert told Bruenig that many people assume that insanity defenses are overused—and suspect that defendants who plead insanity are faking their illness. But studies have found evidence that defendants falsified mental illness in fewer than 10 percent of cases.
Another problem “is that many jurors are under the mistaken impression that the penalties for such verdicts are too soft,” Bruenig continues. But even if Clancy is not found criminally responsible, “it does not mean that she will eventually be freed.” According to the experts Bruenig spoke with, people who successfully plead insanity spend more time in state custody than if they had been found guilty.
“Clancy’s illness caused her to drown in the overwhelming chaos of mothering,” Bruenig argues. “Regardless of what the jury decides, she is already in hell, and has been for some time.”
🎨: Aksh*ta Chandra / The Atlantic. Source: USA Today Network / Reuters.