There are 4 books in The Hart Ranch Billionaires series.
The Hart Ranch Billionaires series does not have a new book coming out soon. The latest book, A Rogue Cowboy's Heart (Book 4), was published in May 2024.
The first book in The Hart Ranch Billionaires series, A Rogue Cowboy's Second Chance, was published in September 2021.
The Hart Ranch Billionaires series primarily falls into the Contemporary Romance genre.