Welcome to Eldey, an island with deadly secrets. Mona: a carefree artist, staying at the Cloister to work on her illustrations. Beth: the harried mother of a toddler, on the remote Welsh island for a weekend with her family. Charlotte: a reluctant stepmother who wanted a romantic getaway with her husband. One of them is a serial killer who poisoned four of her friends at her eleventh birthday party. They all fit the profile. Who will risk everything to kill again? An absolutely gripping Welsh crime novel, perfect for fans of Sarah Pearse and Lucy Foley.