<P> The first book in the series , The Hidden Oracle , was released on May 3 , 2016 . The second book in the series , The Dark Prophecy , was released on May 2 , 2017 . The third book in the series , The Burning Maze , was released on May 1 , 2018 . The fourth book in the series , The Tyrant 's Tomb , will be released in October 2019 . </P>
<P> The first book in the series , The Hidden Oracle , was released on May 3 , 2016 . The second book in the series , The Dark Prophecy , was released on May 2 , 2017 . The third book in the series , The Burning Maze , was released on May 1 , 2018 . The fourth book in the series , The Tyrant 's Tomb , will be released in October 2019 . </P>
when does the next book in the trials of apollo come out
when does the next book in the trials of apollo come out
October 2019
October 2019