After informing on fellow police officers for assaulting an alleged rapist, Grace Narayan is posted as a sergeant to the small Welsh island of St Jory, where she begins investigating the disappearance of a local boy named Cai. Along the way, Grace uncovers local secrets and suspects the involvement of a pagan cult named True Way, which the islanders claim no longer exists.

• Anjli Mohindra
• James Bamford
• Adjoa Andoh
• Lu Corfield
• Maeve Courtier-Lilley
• Sam Swainsbury
• Rosie Sheehy
• Tuyen Do