From his breakout role in Mork & Mindy to his Academy Award-winning performance in Good Will Hunting, Robin Williams was a comedian and actor of singular talent who made an indelible mark on American entertainment. And this new book is the definitive biography. Written by New York Times culture reporter Dave Itzkoff, it draws on more than a hundred original interviews with family, friends, and colleagues, ultimately revealing that Williams’ comic brilliance masked a deep well of conflicting emotions and self-doubt. Coming May 15.