The Last Olympian

The Last Olympian is a 2009 American children's fantasy action-adventure middle grade children's fiction novel based on Greek mythology written by American author Rick Riordan. It is the fifth and final novel of the original Percy Jackson & the Olympians series and is the direct sequel to The Battle of the Labyrinth. The Last Olympian revolves around the demigod Percy Jackson as he leads his friends in a last stand to protect Mount Olympus.