Notes

296 pages
Summary: In Jake's fourth adventure he and his family are in Rome, where they uncover the secret history of a Roman legion sworn to protect four mysterious keys that hold back a force that wiped out a lost civilisation. Now, Jake and his family must find the keys to stop a power that threatens to destroy the world. But as he approaches the end of his quest, Jake is faced with a terrible choice - to save the world or save his family.