Michael Buckley is the New York Times bestselling author of The Sisters Grimm, the acclaimed fantasy mystery series that reimagines classic fairy tales for a new generation of readers. Blending adventure, humor, and magical mysteries, his books have captivated millions of fans around the world. Buckley is also the author of the N.E.R.D.S. series and has worked in television and animation. He lives in Brooklyn, New York, with his family.

Peter Ferguson is the acclaimed illustrator of The Sisters Grimm series. Born in Montreal, Canada, he studied at the Ontario College of Art and Design in Toronto before beginning a career as a professional illustrator. His artwork has appeared in books, magazines, and publications around the world, and his clients have included Marvel Comics, The Wall Street Journal, the Royal Shakespeare Company, and the Los Angeles Times. In addition to illustrating bestselling children's book series such as The Sisters Grimm, Ferguson is also an accomplished fine artist known for his richly detailed, imaginative paintings.