In her day, Mary Roberts Rinehart was known as the "American Agatha Christie," which is quite a sign of respect given that Christie is one of the greatest mystery writers in history. Rinehart's works are also still popular today.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzes reviews to verify trustworthiness.