Andy Griffiths is the New York Times bestselling author of What Body Part is That?, Killer Koalas From Outer Space, The Big Fat Cow that Goes Kapow, and The Cat on the Mat is Flat. He lives in Australia.

Terry Denton has worked with Andy on many books, including Killer Koalas From Outer Space and The Big Fat Cow that Goes Kapow. He lives in Australia with his wife and three kids.

"A series starter that will appeal to fans of Jeff Kinney and Dav Pilkey . . . A treat for all . . . And guess what? It makes for good tree house reading." --Booklist

"Fans of Jeff Kinney's Diary of a Wimpy Kid and Lincoln Peirce's Big Nate series will be drawn to this book, while parents will enjoy the absence of snarky humor." --School Library Journal

"Longtime collaborators Griffiths and Denton (Killer Koalas from Outer Space) get metafictional in their latest book (first published in Australia), and the result is anarchic absurdity at its best. Young buddies Andy and Terry live together in the sort of tree house that kids dream about, complete with bowling alley, shark tank, vines to swing from, and underground laboratory." --Publishers Weekly, starred review

"Boys in particular will like the burping contests, gross creatures, and ridiculous choices that Terry and Andy make throughout the book. And as if killer mermaids are not enough, there are sea monkeys. And a giant gorilla. And a giant banana. And the return of the catnary. See? Silly, ridiculous fun. Kids will love it." --Kris Sauer, Children's Literature