How many books are in the Heroes of Olympus series?

There are 3 books in the Heroes of Olympus series.

When will the next book in the Heroes of Olympus series be released?

The Heroes of Olympus series does not have a new book coming out soon. The latest book, Their Weapons Maker (Book 3), was published in August 2017.

The first book in the Heroes of Olympus series, First Contact, was published in April 2017.

Order	Book	Genre	Date
1	First Contact (e)	Romance / R	Apr-2017
2	Fatal Truths (e)	Erotica / ER	Jul-2017
3	Their Weapons Maker (e)	Erotica / ER	Aug-2017