The Trials of Apollo North America to restore the remaining four Oracles and defeat the triumvirate of Roman emperors-turned-Gods, while also being helped by Leo Valdez, the now-mortal Calypso and Festus the bronze dragon. "The Burning Maze" is the third book in the series. It released on May 1, 2018. The book follows Lester Papadopoulos/Apollo, Meg McCaffrey and Grover Underwood while they try to rescue Herophile, an Oracle that speaks only in puzzles, from the Roman emperor Caligula and his talking horse, Incitatus. In the process, they met some strixes that feed only on blood, which they finally repel using strawberries. While sleeping, Apollo
Frederick III, Holy Roman Emperor Frederick III, Holy Roman Emperor Frederick III (21 September 1415 – 19 August 1493) was Holy Roman Emperor from 1452 until his death. He was the first emperor of the House of Habsburg, and the third member of the House of Habsburg to be elected to King of Germany after Rudolph I of Germany and Albert I in the 13th century. He was the penultimate emperor to be crowned by the Pope, and the last to be crowned in Rome. Prior to his imperial coronation, he was duke of the Inner Austrian lands of Styria, Carinthia and Carniola from 1424,