In his continuing adventures, Twig, now sixteen years old, joins the crew of his father's sky pirate ship and embarks on a dangerous mission to collect the powerful stromphrax, a substance that purifies water and also prevents the city of Sanctaphrax from floating away.

Stormchaser 2008, Yearling Books, New York, NY

ISBN-13: 9780440420880

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Stormchaser 2006, Corgi Books, London

ISBN-13: 9780552554237

Revised edition

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Stormchaser 2005, Listening Library

ISBN-13: 9780307281753

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Stormchaser 2004, David Fickling Books, New York, NY

ISBN-13: 9780385750714

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Stormchaser 2001, Corgi Books, London

ISBN-13: 9780552546287

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Stormchaser Corgi Childrens, London

ISBN-13: 9780552551816

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