Months before police identified Luigi Mangione as the man they suspect gunned down a top health insurance CEO and then seemingly vanished from Midtown Manhattan, another disappearing act worried his friends and family.
The 26-year-old scion of a wealthy Baltimore family who was a high school valedictorian and an Ivy League graduate, Mangione had maintained an active social media presence for years, posting smiling photos from his travels, sharing his weightlifting routine and discussing health challenges he faced.
He publicly kept track of nearly 300 books he had read or wanted to read, even posting a favorable review of the Unabomber manifesto on a book website…