The insanity defense is not a referendum on whether a mother deserves sympathy or condemnation; it is a narrow legal question about whether disease destroyed her capacity to know what she was doing was wrong — and that distinction, easy to state and hard to apply, is what just determined the fate of a Bronx woman who killed her two young sons.
Key Points
- A Bronx judge found Dimone Fleming not criminally responsible for the 2022 stabbing deaths of her sons after prosecutors and her defense agreed she was in active psychosis at the time.
- Psychiatrists for both sides — not just the defense — concluded Fleming was hallucinating and believed a spirit had invaded her body.
- The outcome lands amid the closely watched Massachusetts trial of Lindsay Clancy, who has raised a similar postpartum psychosis defense in the killing of her three children.
- Postpartum-psychosis-based insanity claims succeed far more often than the general insanity defense, which prevails in a minority of the roughly one percent of felony cases where it’s even raised.
- Fleming avoids prison but faces indefinite psychiatric commitment, released only if and when clinicians certify she is no longer dangerous.
What the Bronx Court Actually Found
Nearly four years after the killings, a Bronx judge ruled Dimone Fleming not responsible by reason of mental disease or defect for the deaths of her sons, three-year-old Daishawn Fleming and eleven-month-old Octavius Canada, at a Mount Hope family shelter in November 2022. This was not a defense theory that survived a contested trial over prosecutorial objection. Prosecutors themselves agreed with the defense that Fleming was psychotic when she killed her children, a rare instance where the state’s own psychiatric evaluation aligned with the defendant’s claim. Dr. Eric Goldsmith, who evaluated Fleming, testified she was “grossly psychotic and out of touch with reality,” hallucinating and convinced a spirit had invaded her body, and that she believed her actions were necessary to protect or cleanse her sons.
The clinical picture that emerged was consistent, not contested. Fleming had been treated for two months at a Queens hospital and prescribed psychotropic medication before the killings, but she did not take it as directed, and daily marijuana use appears to have compounded her deteriorating mental state. Police responding to a 911 call about smoke and water in her apartment found her irrational, and only later discovered the children’s bodies hidden beneath clothing in the bathtub. She had confessed to detectives at St. Barnabas Hospital, where she was held for psychiatric evaluation before charges were filed. None of that record was in dispute; what was contested, and ultimately resolved, was whether her mental state at the moment of the killings met the legal threshold for criminal responsibility.
How the Legal Standard Actually Works
Every American insanity standard, whatever its precise wording, asks a version of the same question: did a mental disease or defect deprive the defendant of the capacity to appreciate the wrongfulness of her conduct, or to conform her behavior to the law? That is a clinical and legal hybrid, not a simple diagnosis. A defendant can be undeniably mentally ill — depressed, anxious, even delusional in some respects — and still be found criminally responsible if evaluators conclude she nonetheless understood right from wrong when she acted. This is precisely the fault line prosecutors have drawn in the Lindsay Clancy trial, where they argue that whatever illness she suffered, medications capable of clouding her judgment had left her system months earlier, and that treating physicians observed no signs of psychosis in the weeks before the killings.
A Defense With a Deeper History Than the Headlines Suggest
Postpartum psychosis pleas did not begin with Fleming or Clancy. Andrea Yates, the Texas mother who drowned her five children in 2001, remains the case against which every subsequent filicide-and-psychosis trial is measured. Yates was initially convicted despite documented postpartum psychosis and a history of psychiatric hospitalization, only to have that conviction overturned after it emerged a key prosecution expert had given false testimony; a retrial in 2006 found her not guilty by reason of insanity. That reversal illustrates how sensitive these outcomes are to the specific expert testimony a jury hears, and how differently the same underlying illness can be litigated depending on the strength and credibility of competing psychiatric evidence.
The broader statistical picture explains why these cases draw such outsized attention relative to their frequency. The insanity defense overall is raised in roughly one percent of felony prosecutions nationwide, and succeeds in only a minority of those instances — estimates cluster between fifteen and twenty-six percent depending on jurisdiction and study. Postpartum psychosis claims, however, perform meaningfully better than that baseline. Researchers studying filicide categorize killings by motive, and the categories most likely to succeed with an insanity defense are “altruistic” filicides, where a delusional parent believes she is saving her child from a worse fate, and “acutely psychotic” filicides, where the parent has no comprehensible motive at all. Fleming’s belief that she was “cleansing” her sons, and Yates’s belief she was saving her children from eternal damnation, both fit squarely within that altruistic-delusional category — which is exactly why juries and judges, however uneasy, have historically found these particular insanity claims more credible than most.
Why the Clancy Comparison Matters, and Where It Breaks Down
The temptation to treat Fleming’s outcome as a preview of Clancy’s verdict is understandable but imprecise. Both defenses rest on postpartum psychosis; both involve killings a jury or judge must weigh against overwhelming grief and public revulsion. But the evidentiary postures diverge sharply. In Fleming’s case, prosecution and defense psychiatrists reached the same clinical conclusion, which is why the outcome was resolved without a contested jury trial at all. In Clancy’s case, prosecutors have actively disputed the psychosis claim, arguing medications capable of impairing her were out of her system by the time of the killings and that treating doctors saw no psychotic symptoms in the months beforehand — a direct clinical disagreement the Fleming case never had to resolve.
As jurors in the Lindsay Clancy trial decide her fate, New York City mom Dimone Fleming, who killed her children during a state of postpartum psychosis in 2022, was found not responsible by reason of mental disease or defect. https://t.co/IqoTM3JHQJ pic.twitter.com/VqavhUDHhh
— Oxygen True Crime (@oxygen) August 31, 2026
What a Finding of Not Responsible Actually Means Going Forward
A verdict of not criminally responsible is not an acquittal in the sense the public often imagines; it is a determination that punishment is the wrong legal tool, followed by commitment to psychiatric custody rather than prison. Fleming will avoid a criminal sentence, but she faces confinement that could last months or years, contingent on clinicians certifying she no longer poses a danger. That structure — treatment in place of punishment, with release governed by psychiatric assessment rather than a fixed term — is the actual mechanism these cases turn on, and it is the frame through which any comparable verdict, in Massachusetts or elsewhere, should be understood.
Sources:
lifesitenews.com, nytimes.com, abc7ny.com, independent.co.uk, youtube.com, nypost.com
