There are 3 books in The Merriwell Sisters series.
The Merriwell Sisters series does not have a new book coming out soon. The latest book, Never Wager with a Wallflower (Book 3), was published in November 2023.
The first book in The Merriwell Sisters series, Never Fall for Your Fiancee, was published in November 2021.
The Merriwell Sisters series primarily falls into the Historical Romance genre.