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
Coronation of the Holy Roman Emperor and Constantia we see the Roman imperial ritual in substantially its final form; the imperial coronation ritual used for Henry VII in 1312 and that found in the Roman Pontifical of 1520 differ from it only in certain details. The Emperor and Empress go in procession to St. Mary in Turri, the choir singing, "Behold, I send an angel" (1312--The Emperor is received as a brother canon by the canons of the church and dressed in a surplice and an almuce.) The Emperor takes the Oath to defend the Roman Church and swears fealty to the Pope and his successors