Suzy can't wait to return to the Union of Impossible Places on the Impossible Postal Express. But when she arrives, she overhears a dastardly plan to destroy Trollville from a shadowy and unexpected villain. Suzy and her friends must race from magical cloud-worlds to secret caverns to catch the culprit, before Trollville comes crashing down... PRAISE FOR THE AUTHOR: "Rollicking entertainment." THE SUNDAY TIMES on The Train to Impossible Places "All aboard for an unforgettable journey!" THE SUNDAY EXPRESS on The Train to Impossible Places