The fourth book in the bestselling Percy Jackson and the Olympians series. Now with a new cover look! Discover the story behind the Disney+ series. HALF BOY - HALF GOD - ALL HERO. SURE, AS A DEMIGOD I'VE HAD MY FAIR SHARE OF NEAR-DEATH DISASTERS. BUT HEY, I'M STILL HERE TO TELL THE TALE . . . Percy Jackson's enemies are back, and looking for a way to destroy Camp Half-Blood. To stop them, Percy and his friends must take on a new quest through the mysterious labyrinth - a sprawling underground world with deadly surprises at every turn. But the labyrinth was built to keep heroes out, and secrets safe within. As time runs out and the Titans draws near, can Percy save the day once more?