Sixteen-year-old Chas McGill is convinced that a German spy lurks in wartime Garmouth and, what's more, he's determined to prove it. But what starts as a bet with his friend Cem goes far beyond a game. And Chas's growing obsession with the spy leads him to a life-changing decision.

Fathom Five 2002, Macmillan Children's Books, London

ISBN-13: 9780330398626

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Fathom Five 1996, Pan Books (UK)

ISBN-13: 9780330322300

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Fathom Five 1990, Random House Books for Young Readers

ISBN-13: 9780679801313

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Fathom Five 1990, Peter Smith Publisher

ISBN-13: 9780844666648

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Fathom Five 1982, Puffin Books, London

ISBN-13: 9780140313536

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Fathom Five 1980, Greenwillow Books

ISBN-13: 9780688802868

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Fathom Five 1979, Macmillan Children's Books, London

ISBN-13: 9780333273852

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