He wiped humanity off the face of the Earth with the press of a button - and he's really sorry! Moments after William presses the big green button, he is convinced he is suddenly the very last person in existence. With a faithful typewriter, a handful of markers, a stack of blank papers, and all the time in the world, 18-year-old Billy is eager to explain how he got tricked into committing this horrible crime. A tale of boyhood and betrayal, lovers and losers, fathers and forest fires . . . and a secret three thousand years in the making.