At the centre of the Earth, Will is in trouble. His enemy, the Styx, are close behind. They'll follow him to the ends of the world - any world. Meanwhile Drake - with help from the unlikeliest of allies - is preparing to fight the Styx from above. But will his daring plan bring him closer to victory ... or to certain death?



At the centre of the Earth, in a world that no one knows exists, Will is in trouble. His enemy, the Styx, are close behind. They'll pursue him to the ends of the world - any world. Meanwhile Drake - with help from the unlikeliest of allies is preparing to fight the Styx from above. But will his daring plan bring him closer to victory ... or to certain death?