In a career spanning more than thirty years, David Letterman redefined the modern talk show with an ironic comic style that transcended traditional television. While he remains one of the most famous stars in America, he is a remote, even reclusive, figure whose career is widely misunderstood. Here, Jason Zinoman, the first comedy critic in the history of the New York Times, mixes groundbreaking reporting with unprecedented access and probing critical analysis to explain the unique entertainer's titanic legacy. Moving from his early days in Indiana to his retirement, Zinoman goes behind the scenes of Letterman's television career to illuminate the origins of his revolutionary comedy, its overlooked influences, and how his work intersects with and reveals his famously eccentric personality.

In a career spanning more than thirty years, Letterman redefined the modern talk show with an ironic comic style that transcended traditional television. Yet he is a remote, even reclusive, figure whose career is widely misunderstood. Zinoman goes behind the scenes of Letterman's television career to illuminate the origins of his revolutionary comedy, its overlooked influences, and how his work intersects with and reveals his famously eccentric personality.