Lindsay Clancy trial Day 15 recap: 'Mortal sin' flare-up, defense experts' theories - NBC Boston
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A "mortal sin" outburst erupted in court as defense experts laid out competing theories about what drove Lindsay Clancy to kill her children.
Insanity DefenseExpert Witness BiasPostpartum PsychosisMoral Responsibility

Theory Briefing
- A forensic pathologist presented a physical reconstruction of the killings, giving jurors a clinical framework to weigh against the defense's psychiatric claims.
- The 'mortal sin' flare-up suggests religious or moral framing entered the courtroom, potentially shaping how jurors emotionally process the evidence.
- Defense experts are advancing theories — likely centered on postpartum psychosis or medication effects — to contest the prosecution's account of intent.
- Competing expert narratives put the jury in the position of choosing between medical explanation and moral culpability for the same acts.