Percy Jackson isn’t expecting freshman orientation to be any fun. But when a mysterious mortal acquaintance appears on campus, followed by demon cheerleaders, things quickly move from bad to diabolical. In this latest installment of the blockbuster series, time is running out as war between the Olympians and the evil Titan lord Kronos draws near. Even the safe haven of Camp Half-Blood grows more vulnerable by the minute as Kronos’s army prepares to invade its once impenetrable borders. To stop them, Percy and his demigod friends must set out on a quest through the Labyrinth—a sprawling underground world with stunning surprises at every turn. Full of humor and heart-pounding action, this fourth book promises to be their most thrilling adventure yet.

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Rick Riordan
Richard Russell Riordan Jr. is an American author. He is known for writing the Percy Jackson & the Olympians series, about a twelve-year-old Percy Jackson who discovers he is a son of Greek God Poseidon. 20th Century Fox has adapted the first two books of his Percy Jackson series as part of a series of films. His books have spawned related media, such as graphic novels and short story collections. He conceived the idea for the Percy Jackson series as bedtime stories about ancient Greek heroes for his son Haley. Haley had been diagnosed with ADHD and dyslexia, inspiring Riordan to make the titular protagonist ADHD and dyslexic. Prior to Percy Jackson, Riordan had written the Tres Navarres series, a series of mystery novels for adult readers.