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In page Spy fiction:

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Manning Coles published Drink to Yesterday (1940), a grim story occurring during the Great War, which introduces the hero Thomas Elphinstone Hambledon. However, later novels featuring Hambledon were lighter-toned, despite being set either in Nazi Germany or Britain during the Second World War (1939–45). After the War, the Hambledon adventures fell to formula, losing critical and popular interest.[citation needed]