This fascinating book contains probably the most expert stories of espionage ever written. For a period of time after it was first published, the book became official required reading for persons entering the British Secret Service.

During World War I, Maugham enlisted with an ambulance unit, but was soon shifted to the Intelligence Department. Although these stories were based on the author's own experiences as a British agent during the war, he emphasized that they were written purely as entertainment, at which, indeed, Ashenden succeeds. Maugham's clarity of style, the perfection of his form, the subtlety of his thought, veiled thinly behind a worldly cynicism, has made him an international figure.