The thirty-six truly good souls on this planet have identities so secret that even they don't know they are special - and that one day they will be called upon to save the world from a terrible fate. They are guarded by an ancient order of protectors, known only as the Blood Guard... It's time for hirteen-year-old Ronan Truelove to save the world - again. Only this time he's dealing with a disembodied hand, an unbeatable hedge-maze, a dangerous millionaire - and four nasty Dobermans. Not to mention the terrible secret he's hiding about his father. Luckily he has Greta and Dawkins to help - but as the stakes get higher, can their friendship survive the unbeatable odds?