Roald Dahl: Spy, Playboy

A portrait of Dahl's Second World War years as an undercover agent attached to the British Embassy in Washington is painted in The Irregulars, published in Britain on September 9.

Drawing on previously unpublished letters and other documents, American journalist Jennet Conant has written about Dahl's numerous sexual conquests.

They include Millicent Rogers, the heiress to a Standard Oil fortune, and Clare Boothe Luce, a right-wing congresswoman and the wife of the publisher of Time magazine.

Boothe Luce proved so frisky, Dahl later claimed to have begged his superiors to take him off the assignment, only to be told to get back into the bedroom.

Read more on The Daily Telegraph