The Battle of the Labyrinth camp for the school year. On his fifteenth birthday at the summer's end, Percy receives a visit from his father Poseidon, who gives him a sand dollar, admonishing him to “spend it wisely”. Nico later appears to tell Percy his plan to defeat Luke once and for all. "The Battle of the Labyrinth" was initially referred to as "Percy 4" until the title was officially revealed. The novel was teased by Rick Riordan behind the pages of its predecessor, "The Titan's Curse". It was based on the Greek myth of the labyrinth, where the Minotaur was supposedly kept. In his
The Battle of the Labyrinth [conveying] Annabeth's emotions". He attempts a number of different accents for the gods, demigods, and mortals in the story with varying levels of success." The sequel to "The Battle of the Labyrinth" is titled "The Last Olympian" and was released 5 May 2009. It is the final novel in the "Percy Jackson and the Olympians" series. "The Last Olympian" was No. 1 on the "USA Today" bestseller list. The Battle of the Labyrinth The Battle of the Labyrinth is an American fantasy-adventure novel based on Greek mythology written by Rick Riordan. It is the fourth novel in the "Percy Jackson