The Gates of Hell by David Leadbeater
Matt Drake sets out to cancel the blood vendetta imposed by the underworld linchpin, the Blood King. Revenge, terrible and personal, drives Drake in his quest to stop the man who has become his nemesis.
With nothing more than an ancient map left behind by Captain Cook, Drake and his team must follow the Blood King through a deadly maze in the heart of a volcano. He risks everything to track down the most dangerous man of modern times…