To celebrate their 10-year anniversaries, books four through six in Buckley's beloved "New York Times"-bestselling series are now available in revised editions with new covers and a larger trim size. Illustrations.

Michael Buckley is the author of the successful Sisters Grimm and NERDS series. He is also the author of the Undertow trilogy. He lives in New York City.

Peter Ferguson is an illustrator of picture books, comic books, and novels. He lives in Montreal, Canada.