Book 4 in the series and it sets up the last book intelligently and style without losing its own identity. We come back to Percy, Annabeth, Grover and Tyson going on a quest to seeking Dedalus the creator of the deadliest maze : The Labyrinth. The whole idea of the Labyrinth being right under our feet with magical entrance, death lurking in every corner is appealing to my inner Mythological Geek. I loved the theme, I loved how Riordan got around the whole magical string to guide oneself out of the maze. I love how the author takes one well known mythological beast or foe and twists it enough to take it into the modern world. When you know the traditional stories you can see the some of the punches coming up but still a very entertaining tale of friendship, empathy and ultimately forgiveness. All wrapped up in this crazy race inside a mad maze.