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 (horse) horse Justice, who during his racing career had won two races at Newmarket. Daedalus made his first racecourse appearance in the Derby at Epsom on 5 June. Forty-nine horses had been entered for the race at 50 guineas each, but only four ran, including a stable companion of Daedalus who was not included in the betting. This four-horse field was the smallest in Derby history. The Duke of Bedford's Leon was the 4/5 favourite, with Lord Egremont's unnamed Highflyer colt (later named Ragged Jack) the 2/1 second choice and Daedalus starting at odds of 6/1. Ridden by Frank Buckle, Daedalus