From New York Times culture reporter Dave Itzkoff, the definitive biography of Robin Williams – a compelling portrait of one of America's most beloved and misunderstood entertainers.

From his rapid-fire stand-up comedy riffs to his breakout role in Mork & Mindy and his Academy Award-winning performance in Good Will Hunting, Robin Williams was a singularly innovative and beloved entertainer. He often came across as a man possessed, holding forth on culture and politics while mixing in personal revelations – all with mercurial, tongue-twisting intensity as he inhabited and shed one character after another with lightning speed.

But as Dave Itzkoff shows in this revelatory biography, Williams's comic brilliance masked a deep well of conflicting emotions and self-doubt, which he drew upon in his comedy and in celebrated films like Dead Poets Society; Good Morning, Vietnam; The Fisher...