Moonflower murders

"Managing a small hotel on a Greek island, retired publisher Susan Ryeland is getting restless when her new guests announce that their daughter Cecily was married in a Suffolk coast hotel where a notorious murder took place--on the same day as the wedding. Susan's late author Alan Conway based a mystery on the murder, and Cecily, who read the book and is convinced that the wrong person was convicted of the real-life crime, is now missing"--Library Journal (06/01/2020).