Rick Riordan

Percy and Annabeth fall into Tartarus while their friends fight to close the Doors of Death from the mortal side. Both storylines push the series into darker territory, with character revelations that changed how the fandom understood these heroes.

Percy leads the defense of Olympus against Kronos's army as the Great Prophecy — the one that has shadowed his life since birth — finally comes true in a battle for the fate of the gods.

The seven demigods of the Prophecy finally unite aboard the Argo II for a dangerous quest to Rome. Annabeth carries the burden of a solo quest following the Mark of Athena — a path that no child of Athena has survived — while the team races to prevent war between Greek and Roman demigods.

Percy must navigate the deadly Labyrinth of Daedalus to prevent Kronos's army from using it to launch a surprise attack on Camp Half-Blood.

Percy Jackson wakes up with no memory at a Roman demigod camp. With new friends Hazel Levesque and Frank Zhang — both carrying heavy secrets — Percy must journey to Alaska to free the god of death and stop a giant army from destroying Camp Jupiter.

Twelve-year-old Percy Jackson discovers he is the son of a Greek god and must prevent a war among the Olympians by recovering Zeus's stolen master lightning bolt.

Percy Jackson and his friends venture into the treacherous Sea of Monsters to retrieve the Golden Fleece and save Camp Half-Blood from destruction.

Percy must rescue Artemis and Annabeth from the Titan lord's forces before a devastating prophecy comes to pass and Olympus falls.

The final prophecy reaches its climax as the seven demigods race to Athens to face the Giants and prevent Gaea from awakening. The conclusion resolves five books of buildup and sends Percy and Annabeth's story in a new direction.

Carter and Sadie face the final battle: Apophis is about to rise and consume the sun itself. They must bring Ra back at full power and deploy a shadow magic that has never successfully worked — while their entire network of nome magicians faces obliteration. The Kane Chronicles comes to its conclusion.

Jason wakes up on a school bus with no memory of who he is. Piper and Leo think he's their friend, but nothing about his past is real. Drawn into the world of Greek and Roman demigods, Jason must discover his true identity while leading a quest to free the goddess Hera and prevent an ancient enemy from waking.

Carter and Sadie have three days to find the three sections of the Book of Ra and awaken the sun god before the chaos serpent Apophis escapes his prison. Racing against a countdown across multiple continents, the Kane siblings fight gods, demons, and each other's stubborn pride.

Carter and Sadie Kane discover they are descended from the most powerful magicians in ancient Egypt. When their father accidentally unleashes the chaos god Set, the siblings must master Egyptian magic fast enough to prevent Set from destroying the world — and find out why their family has been lying to them.