The Terrifying Tale of Terry's Underpants: A Little Treehouse Book 3

Andy Griffiths is one of the most popular children's authors in Australia. He has written 33 books, including nonsense verse, short stories, comic novels and plays. His books have been New York Times bestsellers, won 80 children's choice awards, been adapted as a television cartoon series and sold 13 million copies in Australia and New Zealand.

Andy is best known as the author of the JUST! series, The Day My Bum Went Psycho and the bestselling, award-winning, record-breaking Treehouse series, illustrated by Terry Denton.

In 2008 Andy became the first Australian author to win six children's choice awards in one year for Just Shocking.

In 2008 Andy and his wife Jill collaborated with The Bell Shakespeare Company on the popular and critically acclaimed theatrical production 'Just Macbeth!' which was nominated for two Helpmann Awards. In July 2010 'Just Macbeth!' completed a return sold-out season at the Sydney Opera House before heading to the Edinburgh Fringe Festival. The book of the play was shortlisted for the 2010 Prime Minister's Literary Awards.

In 2011 Andy and Terry started a new series that has captivated audiences across the country, smashed sales records and won industry awards. The 13-Storey Treehouse won the Book of the Year for Older Children at the Australian Book Industry Awards in 2012. The 26-Storey Treehouse, The 39-Storey Treehouse, The 52-Storey Treehouse and The 65-Storey Treehouse, The 78-Storey Treehouse, The 104-Storey Treehouse and The 117-Storey Treehouse have all won ABIA Awards. The 91-Storey Treehouse won the ABIA Audiobook of the Year in 2018 and The 52-Storey Treehouse also won the overall ABIA Book of the Year in 2015.The 65-Storey Treehouse, The 78-Storey Treehouse and The 91-Storey Treehouse have been, respectively, the fastest selling Australian books ever. The 104-Storey Treehouse, The 117-Storey Treehouse, The 130-Storey Treehouse, The 143-Storey Treehouse and The 156-Storey Treehouse were Australia's bestselling children's books in their years of publication.

The much-loved Treehouse series has been embraced by children around the world and is now published in more than 35 countries.

Stage shows of The 13-Storey Treehouse, The 26-Storey Treehouse, The 52-Storey Treehouse and The 78-Storey Treehouse have had sell-out seasons at the Sydney Opera House. The stage show of The 91-Storey Treehouse played at the Sydney Opera House in 2019.

Andy is an ambassador for The Indigenous Literacy Foundation and the Pyjama Foundation, and was awarded the Dromkeen Medal in 2015 to honour his outstanding contribution to Australian children's literature.

Stig Wemyss is an actor, writer and voice over artist. Stig is also the author of the exciting in-car audio entertainment series, The Tripp Diaries.