The Battle of the Labyrinth (Percy Jackson and the Olympians, Book 4)

The Battle of the Labyrinth (Percy Jackson and the Olympians, Book 4) - Rick Riordan This is the first Percy Jackson book I've read in the series, and I enjoyed it immensely. The characters, plot and the pace of the book are rich and detailed, and there is something going on on every page, which makes you desperate to read on and find out what happens to the characters.