Arthur Quinn has defeated the World Serpent. He's come face-to-face with the Fenris Wolf. But now he faces Loki's most powerful child, Hell's Keeper. With his friends Ash, Ellie and Ex, Arthur sets out to stop this new menace. But Loki has a trick up his sleeve, a trick that changes everything.

Born in Leitrim and now living in Dublin, Alan Early studied in the National Film School, Dun Laoghaire. Upon graduation in 2008, he co-founded Annville Films. From an early age he used to write and illustrate short stories about banshees and ghost animals and whatever else struck his imagination. When he was ten, he visited Dublinia, a recreated Viking village and so began a love affair with Viking lore.