Grace scrambled upstairs and shoved the telescope into its case on top of the wardrobe. It was not until she was back in the kitchen that she thought: I've seen a ghost through a telescope! And then, how can I see it again? She is determined to search for her ghostly knight and to find out the truth, but no-one in her family will help her as they are all too busy. The only solution is to break the rules - and, in doing so, Grace finds herself on a quest that will lead her to a guardian angel, a band of real-life mercenaries and the mysterious, elusive wheeling machine... Download and start listening now!