The quest is full of action and suspense, the characters are engaging and always willing to help each other, the story is very original and fantastic. An extraordinary new book at the scenario with the integration of the characters of Quintus, Kitty O'Leary, the dog of Hades who will play his role later in the adventure and of course the "omnipresence" of Daedalus, key vault of this volume. Labyrinth is very well represented, a "simple" maze is not enough "terrible" for our hero, Rick Riordan has cleverly decided to make this Labyrinth develops by itself and creates itself a rocky road for our heroes. I personally liked the dreamlike flashback of Percy on the life and crimes of Daedalus.