"The Greek and Roman demigods will have to cooperate in order to defeat the giants released by the Earth Mother, Gaea. Then they will have to sail together to the ancient land--Greece itself--to find the Doors of Death"--
2018 - I listened to the audiobook this time, which was really nice - except for the fact that the narrator kept mispronouncing Gaia. (I mean as far as I know it's not pronounced as GIA).
