Discover the exciting and dangerous lives of spies and secret agents from Blue Peter Award-winning David Long and rising star Terri Po.

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.