Ice Shock (Joshua Files #2) Harris, M. G.

Josh is certain that his father’s death was no accident. To make things worse, he’s starting to wonder if he can really trust his closest allies. But when he finds out a shocking secret about the legendary lx Codex, he must journey to the secret Mexican city of Ek Naab, where the riddle of the mysterious Bracelet of Itzamna awaits him.