A single-minded adventurer and an eternal child who gave us the iconic Willy Wonka and Matilda Wormwood, Roald Dahl lived a life filled with incident, drama and adventure: from his harrowing experiences as an RAF fighter pilot and his work in British intelligence, to his many romances and turbulent marriage to the actress Patricia Neal, to the mental anguish caused by the death of his young daughter Olivia. In "Storyteller, "the first authorized biography of Dahl, Donald Sturrock--granted unprec...