The Obsidian Throne is J.D. Oswald's stunning conclusion to 'The Ballad of Sir Benfro' series - an epic high fantasy tale of dragons, swordsmanship, honour and two of the most unlikely yet extraordinary heroes in all of fiction.

There is no war in the northlands, just annihilation. Either the dragons will destroy this world or Queen Beulah will raze it to the ground.

Below the city is a secret the House of Balwen have kept for millennia, a treasure beyond imagination. None but a direct descendent of Balwen himself can open the escape routes from this cavern. To do so, Princess Iolwen will need to claim the Obsidian Throne.

Meanwhile Errol and Sir Benfro find their destinies drawing closer together, with the future of all life in the Twin Kingdoms resting on these two unlikely heroes. There will be self-sacrifice and terrible betrayals. And the lives of boy and dragon will be forever changed.

J. D. Oswald is the author of the epic fantasy series 'The Ballad of Sir Benfro', which includes Dreamwalker, The Rose Cord, The Golden Cage, The Broken World and The Obsidian Throne. He is also the author of the Inspector McLean series. James runs a 350-acre farm in north-east Fife.