Remember that strange tale of banshees and marsh-warriors The Man in The Skirt? Shape-shifting and swordplay suddenly replaced ordinary school life for four kids, Wilf Sexton, his friend Burp, and two girls from their class, Molly Pogson and Kirsty Armitage, as the first book in the Celtic Chronicles trilogy mounted to a thrilling climax involving armed police and a siege on the school roof with hostages. Now, Wilf and the banshees are back. But, because of the time-travelling ending of the first part of the story, the start of this book finds the main characters unaware of what has happened to them so far. So, when Wilf picks up a strange, bean-sized Celtic artefact during a school trip to the museum, he is only dimly aware that in fact this is the Orf Stone, and he is now the Stone-Master. Before he can come to terms with this, and piece the facts together, he's suddenly pitched headlong into the next cycle of events, triggered by his teacher trying to kill him The next thing the kids know, they are once more in that strange Celtic twilight world, where age old forces of good and evil are locked in a mighty struggle, only balanced by the Castle of Endless Time. Living as fugitiv