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

The Styx have surfaced. If you thought the Limiters were nasty, think again. They've brought their females with them this time. And all that stands in their way are Will and his friends, and a rag-bag team of retired commandos. It's a smoking spiral of chaos and not everyone will survive.