The Final Chapter Book Club by Cara Sparrow

When tide comes in, the truth will come out… When eight women gather at Blackthorne Hall–a remote island once home to a legendary crime writer–they expect wine, nostalgia, and conversation. What they get is murder. Cut off by the tide and trapped by a violent storm, the group quickly realises they are not alone. One by one, they are picked off in ways that echo the novels of a disgraced author they once publicly destroyed. Years earlier, their book club accusation went viral, triggering a scandal that ended his career. And his life. Now, someone is using his stories to take revenge. Each death follows a pattern. Each clue points to the past. And every woman in the house has something to hide. As suspicion fractures the group and paranoia sets in, one question becomes impossible to ignore: Is the killer one of them…or someone who has been watching all along?