Sinopsis

A settled, happy schoolteacher starts getting unsettling letters—and plunges back into her painful past in order to identify the sender . . .

Stella is a teacher in a secondary school in the village of West Compton, North Yorkshire. She and her partner, Wade, appear to have the perfect life—but after she receives a series of threatening letters, her life takes a sinister turn.

Stella is forced to examine her past to find out who is behind the letters. All evidence points to a man with whom she had a one-night stand. Deciding to confront him, Stella soon discovers he is not the one responsible, and she must delve deeper into her past. After a visit to her estranged alcoholic mother, Stella is forced to look even closer to home. Meanwhile, the threats escalate. But who is behind the campaign of hate and why? Stella is about to find out . . .