Author(s): John Flanagan
Hal and the brotherband are back home in Hallasholm when a knock on the door brings an unexpected visitor - Stig's long-absent father, Olaf. The Empress of Byzantos's son has been kidnapped by pirates, and palace guard commander Olaf has been held responsible. The only way to redeem himself is to rescue the boy. Olaf needs a ship and a crew, and he has nowhere else to turn. The pirates' fortress is on an island, where a collapsed volcano has left a caldera of towering cliffs surrounding a deep lagoon. There is only one way up or down - and the pirates have the key. How can the Herons possibly rescue the Empress's son from such an inhospitable place? Culminating in a battle for survival on the seas, The Caldera sees the Herons take on one of their most difficult missions yet!
John Flanagan's Ranger's Apprentice and Brotherband adventure series have sold more than eight million copies worldwide. His books are available in more than one hundred countries, are regularly on the New York Times bestseller list, and have had multiple award shortlistings and wins in Australia and overseas. John, a former television and advertising writer, lives with his wife in a Sydney beachside suburb.