Download or read book The Joshua Files: Invisible City written by M. G. Harris and published by Bloomsbury Publishing USA. This book was released on 2010-07-20 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thirteen-year-old Josh goes to Mexico--with a hit man on his trail--to investigate the murder of his father, who was seeking an ancient codex containing information about the Mayan prophecy that foretells the end of the world in 2012.