There are 3 books in the Three Ruthless Kings series.
The Three Ruthless Kings series does not have a new book coming out soon. The latest book, Pregnant with Her Royal Boss's Baby (Book 3), was published in October 2023.
The first book in the Three Ruthless Kings series, Wed for Their Royal Heir, was published in February 2023.
The Three Ruthless Kings series primarily falls into the Contemporary Category Romance genre.