The Burning Maze (The Trials of Apollo Series #3)

The formerly glorious god Apollo, cast down to earth in punishment by Zeus as an awkward mortal teenager named Lester Papadopoulos, must restore five Oracles that have gone dark. Duty-bound to a confounding young daughter of Demeter named Meg, Lester managed to survive his first two trials. Now he and Meg must go through the Labyrinth to find the third emperor — and an Oracle who speaks in word puzzles — somewhere in the American Southwest.