"Ravens and a witch and a haunted house?" said Grace. New recruit Tom Eely has joined warden Grace Griffin and her family as they use their amazing map to teleport through the country of Moreland fighting crime. Grace and Tom are keen to get to work, but their first call to a quiet mountain village doesn't seem to offer many chances to use their exciting gadgets or combat skills. As the pair investigate, however, the situation becomes more puzzling. Why are a flock of ravens attacking the villagers? And are the locals' tales of a mountain witch really to be believed. Grace and Tom will need all their wit skill and courage to solve the raven riddle . . .