The Dark Prophecy (The Trials of Apollo Book 2)The second title in Rick Riordan's Trials of Apollo series set in the action packed (and hilarious) world of Percy Jackson. The god Apollo, cast down to earth and trapped in the form of a gawky teenage boy as punishment, must set off on the second of his harrowing (and hilarious) trials. He and his companions seek the ancient oracles, and restoring them is the only way for Apollo to reclaim his place on Mount Olympus but this is easier said than done.