New York Times-bestselling author and four-time winner of the prestigious Book of the Year award in AustraliaAndy Griffiths, who wrote the Treehouse series, Killer Koalas From Outer Space, The Big Fat Cow that Goes Kapow, The Cat on the Mat Is Flat, and The Day My Butt Went Psycho!, is at his best in these wild storytelling adventures, perfect for readers of all ages. Jill Griffiths is Andy's wife, and his first and closest editor. Terry Denton has worked with Andy on many books, including the 13-Story Treehouse series and Killer Koalas From Outer Space. He lives in Australia with his wife and three kids.