How many books are in the Caveman Instinct series?

There are 4 books in the Caveman Instinct series.

When will the next book in the Caveman Instinct series be released?

The Caveman Instinct series does not have a new book coming out soon. The latest book, Ryder (Book 3), was published in July 2017.

The first book in the Caveman Instinct series, Stephan, was published in November 2014.

Order	Book	Genre	Date	Rating
1	Stephan	Romance / R	Nov-2014	4
2	Richard	Romance / R	Aug-2015	5
2.5	Carl	Contemporary Romance / CR	Jun-2016	5
3	Ryder	Contemporary Romance / CR	Jul-2017	4.5