The Hidden Oracle

The Hidden Oracle is a fantasy novel based on Greek and Roman mythology written by American author Rick Riordan. It was published on May 3, 2016, and is the first book in The Trials of Apollo series, the second spin-off of the Percy Jackson & the Olympians series. The book and its cover art by John Rocco were first announced in 2015. It has been published in hardcover, audiobook, ebook, and large-print editions. To date, The Hidden Oracle has been translated into 19 languages from its original English.

The Hidden Oracle

The Hidden Oracle is a fantasy novel based on Greek and Roman mythology written by American author Rick Riordan. It was published on May 3, 2016, and is the first book in The Trials of Apollo series, the second spin-off of the Percy Jackson & the Olympians series. The book and its cover art by John Rocco were first announced in 2015. It has been published in hardcover, audiobook, ebook, and large-print editions. To date, The Hidden Oracle has been translated into 19 languages from its original English.