Some believe that, to avoid a mass panic among the mortal population, he was forced to swear on the River Styx to present Percy Jackson’s story as fiction.

Now includes an exclusive sneak preview from The Sword of Summer, the first in Rick Riordan's brand-new series, Magnus Chase and the Gods of Asgard.

His latest novel is Daughter of the Deep, a modern take on Jules Verne's 20,000 Leagues Under the Sea. The crocodile was gone, but standing in the marsh about twenty feet away was a teenage guy in jeans and a faded orange T-shirt that said CAMP something. I hitched our flying reed boat to Freak, my pet griffin, and we spent the morning buzzing around the south shore, looking for signs of trouble.

Prior to Percy Jackson, Riordan had written the Tres Navarres series, a series of mystery novels for adult readers. As descendants of the House of Life, the Kanes have some powers at their command, but the devious gods haven’t given them much time to master their skills at Brooklyn House, which has become a training ground for young magicians. But rumour has it that Camp Half Blood actually exists, and Rick spends his summers there recording the adventures of young demigods.Then monstrous jaws opened – ridges of crooked teeth and an expanse of pink maw wide enough to gulp down a garbage truck.