葛瑞絲與新夥伴湯姆首次出任務，卻被派往寧靜山村調查烏鴉擾人事件。這樣的小事，真需要他們嗎？隨著調查深入，村民口中的山中女巫與神祕烏鴉逐漸揭露驚人祕密。這場任務比他們想的更艱難，也更重要。Grace's family are wardens of the Griffin map, using its teleport technology to fight crime across Moreland. And now there's someone new on the team: Tom Eely, who has been training hard to become a warden.Grace and Tom reckon they're ready to tackle a mission together, but they're disappointed when Mum sends them to a quiet mountain village where ravens have been pestering the locals. Surely they won't be any opportunities to use their exciting gadgets or combat skills there?But as the pair investigate, the situation becomes more puzzling. Why does it seem like the ravens are protecting something? And are the villagers' tales of a mountain witch really to be believed? Grace and Tom will have to use all their wit, skill and courage if they want to solve the raven riddle ...Bestseller Vashti Hardy returns with another heartfelt and action-filled addition to the Griffin Gate series.
