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
Roman emperor After the fall of Constantinople, Thomas Palaiologos, brother of Constantine XI, was elected emperor and tried to organize the remaining forces. His rule came to an end after the fall of the last major Byzantine city, Corinth. He then moved in Italy and continued to be recognized as Eastern emperor by the Christian powers. His son Andreas Palaiologos continued claims on the Byzantine throne until he sold the title to Ferdinand of Aragon and Isabella of Castile, the grandparents of Holy Roman Emperor Charles V. The concept of the Roman Empire was renewed in the West with the coronation of