Andy Griffiths

The New York Times bestselling author Andy 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.

Terry Denton has worked with Andy on many books, including the Treehouse series and Killer Koalas From Outer Space. He lives in Australia with his wife and three kids.