Rick Riordan books

SEA OF MONSTERS

THE HOUSE OF HADES

DEMIGODS AND MAGICIANS

RED PYRAMID

THE SON OF NEPTUNE

HIDDEN ORACLE

DARK PROPHECIES

THE MARK OF ATHENA

TYRANT’S TOMB

LIGHTNING THIEF

SERPENTS SHADOW

BATTLE OF THE LABYRINTH

THRONE OF FIRE

THE LOST HERO

THE TITANS CURSE

BURNING MAZE