The 'Tunnels' adventure is far from over for Will Burrows. In his quest to find his father, Will is plunged even deeper underground. And as if things weren't bad enough already in the heat and the darkness, he stumbles across a Styx plot with terrible implications for the world above. And a sister who isn't finished yet …
The boys, together with their new found comrades, renegades, Drake and Elliott, must find a way to foil the Styx plans and save the top-soilers.
Ages: 8+
