A single spy can save thousands of lives.Spies and secret agents have been hard at work for centuries, risking their lives, and sometimes changing the course of history. Discover twenty-seven of the most courageous and daring, including Britain's first female spy, a teacher turned saboteur, the spy who sang for Hitler and the man who never was . . .An unputdownable collection of real life adventures, stunningly illustrated by Terri Po.

Writer and historian David Long is the award-winning and bestselling author of the acclaimed Survivors series, Pirates Magnified, We are the Romans, The World's Most Magnificent Machines, Tragedy at Sea, The Story of the London Underground and more than twenty other non-fiction books on a wide range of historical subjects. He is married to Rosy and lives in Suffolk.Terri Po is a children's book illustrator who was highly commended in the FAB Prize. She is originally from Hong Kong but graduated from the University of Edinburgh in 2018. She creates editorial illustrations, infographics and illustrated books, as well as doing live graphic facilitation.