John Theydon's classic 1960s novel Calling Thunderbirds is back and better than ever as Peril in Peru! Lovingly adapted by Chris Dale, this story has International Rescue headed to South America for an adventure out of print since 1990. Like Terror from the Stars, this book will be available for pre-order as a hardback and full cast audio adaptation. Insiders can also expect some special behind the scenes content! For more details, don't miss tomorrow's official announcement in the Gerry Anderson Podcast.