Percy Jackson isnΓÇÖt expecting freshman orientation to be any fun. But when a mysterious mortal acquaintance appears on campus,followed by demon cheerleadersthings quickly move from bad to diabolical. In this latest installment of the blockbuster seriestime 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 KronosΓÇÖs army prepares to invade its once impenetrable borders. To stop themPercy and his demigod friends must set out on a quest through the LabyrinthΓÇöa sprawling underground world with stunning surprises at every turn. Full of humor and heart-pounding actionthis fourth book promises to be their most thrilling adventure yet.