Fourth in the series of unusual adventures set on the London Underground, known to the souris who live there as Tubeworld. Dodie finds a `Gift' from the Tunnellers. What is it, why have they left it and what should the souris do with it?

Fourth in the series of unusual adventures set on the London Underground, known to the souris who live there as Tubeworld. Dodie finds a `Gift' from the Tunnellers. What is it, why have they left it and what should the souris do with it?