This book is totally Riordan's best book so far! Although gorgons acting as Bargain Mart greeters giving out tasty samples of Crispy Cheese'n' Wieners try to destroy Percy, he escapes to camp Jupiter to join the Roman demigods and fulfill his destiny. Joined by Frank Zhang, who can be anything he wants to be, and Hazel, who has died and lives again, Percy's adventures take him across the US with a few detours, like the one with the screaming and the weed whackers, through the headquarters of Amazon.com which is of course, run by Amazons, to Alaska, where the gods have no power, to kill a son of Gaea, restore death and - oh, by the way, the gods now have i-Pads and skype - and to save camp Jupiter from an assortment of monsters and grain spirits and another son of Gaea. This is a fantastic and rather funny adventure and I really think it is Riordan's best book that I have read yet. I look forward to the next book in this series!