Merlin's beloved penguin, Penny, has been put under a spell. Jack and Annie must find four things to break the spell. The first is a rare and precious emerald. When the magic tree house whisks them back to India over 400 years ago to search for the jewel, they discover an amazing and exotic world filled with great danger. Illustrations.

A Crazy Day with Cobras 2012, Random House Books for Young Readers, New York

ISBN-13: 9780375867958

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A Crazy Day with Cobras 2012, Turtleback Books

ISBN-13: 9780606269971

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A Crazy Day with Cobras 2011, Random House Books for Young Readers, New York, NY

ISBN-13: 9780375868238

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A Crazy Day with Cobras 2011, Random House Books for Young Readers, New York, NY

ISBN-13: 9780375968235

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A Crazy Day with Cobras 2011, Listening Library, New York

ISBN-13: 9780307746603

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A Crazy Day with Cobras 2011, Media Factory Inc./Tsai Fong Books

ISBN-13: 9784840143127

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