After the library in North Harbor, Michigan is flooded in a storm, mystery writer Samantha Washington offers her bookstore as a venue for the Mystery Mavens Book Club. But she immediately runs afoul of the club leader, Delia Marshall, a book reviewer who can make or break careers, something Sam can ill afford with her debut historical mystery soon to be published. The next morning, Sam opens her shop to find Delia dead on the floor, bashed with a heavy book. Two ambitious cops suspect Sam of the real-life crime. When Sam gathers Nano Jo and their friends from the Shady Acres Retirement Village to review the case, they discover that every one of the Mavens had a motive.