The Birthday Girl

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?