Played by Sophie Okenedo.
Fiona is an ex police officer and has left the force to look after her three children.
Deep down she knows that if she had continued at work she would have made it as a CID detective, but now she just channels her energy into being a full-time mum. She still believes in the importance of tradition and community, is proud of her family’s place in the town and her ability to know all of it’s goings on.
Hattie babysat for the family and Fiona’s police instincts are triggered by Hattie’s disappearance - she is determined to find her. Charlotte, Fiona’s oldest is especially affected by Hattie going missing and starts to feel suspicious and paranoid of everyone around her.