The White Fox (The Seven Stars Trilogy)

Jack Lawson lives an average and ordinary life in a typical southern English town, until the day a white fox introduces himself as Jack's guardian spirit and gives him a mysterious talisman. Jack's life continues to spin out of control when his friend Alex, after warning that the town is in grave danger from demons controlled by the Cult of Dionysus, is kidnapped by the cult. Enlisting the help of his friend Lucy, Jack embarks on a journey unlike one he could have ever imagined.