An underground factory, a terrifying laboratory, and the eerie whistle of the Night Watchman Express... Miriam has only her guardians' son for company, and she and Simon dislike each other from the start. But they must find a way to trust each other, or they will end up on the sinister Night Watchman Express. Full of danger, suspense, betrayal, and a hint of romance, this steampunk adventure is for readers of all ages. "Alison DeLuca is a master storyteller who deserves much more recognition than she gets. I would not hesitate to recommend not only this book but also the entire series. This is Steampunk adventure at its best!"