The Trials of Apollo by Rick Riordan

First paperback edition, 2017 •NWOT• Disney Hyperion's The Hidden Oracle; Book One GRADE 7-8 | LEXILE 680 | GUIDED Z | DRA 70-80 | iREADY 650 | AGE 10-13 Dimensions: L 6.75” x W 4” The Trials of Apollo is a pentalogy (set of 5) of fantasy adventure and mythological fiction novels written by American author Rick Riordan that collectively form a sequel to the Heroes of Olympus series. It is set in the same world as Riordan's Percy Jackson and Heroes of Olympus series and references characters and happenings from earlier stories.