The French Girl by Lexie Elliott (Ex-Library HC/DJ)

Everyone has a secret... They were six university students from Oxford—friends and sometimes more than friends—spending an idyllic week together in a French farmhouse. It was supposed to be the perfect summer getaway...until they met Severine, the girl next door.  But after a huge altercation on the last night of the holiday, Kate Channing knew nothing would ever be the same. There are some things you can't forgive. And there are some people you can't forget...like Severine, who was never seen again.  A decade later, the case is reopened when Severine's body is found behind the farmhouse. Questioned along with her friends, Kate stands to lose everything she's worked so hard to achieve as suspicion mounts all around her. Desperate to resolve her unreliable memories and fearful she will be forever bound to the memory of the woman who still haunts her, Kate finds herself entangled within layers of deception with no one to set her free....