"Warden Griffin at your service. Can I ask if you've seen a monster in the area ...?"

Grace's family are wardens of the Griffin Map, using its teleport technology to fight crime across Moreland. Although Grace is still too young, she longs to go on missions herself. After all, if her brother, Bren, can do it, why can't she?

So when Grace finds herself alone with the map when a distress call comes in, she jumps at the chance to prove she's up to the task. But the map transports Grace to a remote village where nothing is quite as it seems ... Has she taken on more than she can handle?

Grace's family are wardens of the incredible Griffin Map, using its teleport technology to fight crime across Moreland. Right now it's all systems go at Griffin HQ, where Grace, her mum and her brother have their hands full answering a huge number of calls for help. They could really do with another warden on the team - but Mum believes their important work should be kept inside the family.

Meanwhile, Grace is investigating a series of puzzling petty thefts. The clues lead her to a ramshackle castle on a lonely island, where the mystery only deepens. Will Grace be able to track down the thief?

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 ...