Ice Shock (The Joshua Files 4th edition)
Previously in Invisible City Josh Garcia found the Ix Codex, a lost book of the ancient Maya containing the key to surviving a cosmic catastrophe. It looked as though he'd saved the day, but there were still a few unsolved mysteries. What really happened to his father? Who stole the ancient artefact, the Bracelet of Itzamna - and why? Who is behind the mysterious sect that is determined to block the plans of Josh's new Mayan friends? Back home in Oxford he can't tell his mother or his friends about his adventures and his discovery of the codex. Now certain that his father's death was no accident, Josh starts to wonder if he can really trust his closest allies.
