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
Daedalus Erechtheus, claiming that Daedalus fled to Crete after killing his nephew Talos. Over time, other stories were told of Daedalus. Some Greeks claimed to be descendants of Daedalus. People in ancient Greece often believed that their family was descended from mythical characters, though it is likely these characters were seen as historical rather than fictional. The Greek philosopher Socrates claimed to be a descendant of Daedalus in at least three of Plato's books: "Euthyphro", "Alcibaides", and "Meno". In "Euthyphro," Socrates says, "Your statements, Euthyphro, seem to belong to my ancestor, Daedalus." In "Alcibaides", Socrates says, "And mine, noble Alcibiades, to