Luigi Mangione’s Defense to Hinge on Mindset, Emotion, Evidence

Video. Fingerprints. A weapon. A manifesto. A plan.

Police claim that they have accumulated overwhelming evidence that Luigi Mangione fatally shot UnitedHealth Group Inc. executive Brian Thompson, in an early-morning killing on a midtown Manhattan sidewalk that reverberated across the US.

Mangione, 26, was arrested Dec. 9 in Altoona, Pennsylvania, ending a five-day manhunt. While the former software engineer sits in a nearby jail, fighting extradition to New York — a fight that he could soon give up — he hired high-powered New York defense attorney Karen Friedman Agnifilo to represent him.

Friedman Agnifilo and her legal team will ...