As an overworked NHS psychiatrist, Dr Clancy Mclean is used to dealing with mental illness. But she is stressed – trying to balance her career and the needs of her only child, Rowan. And she has her work cut out trying to keep her patients well. She knows two of them are psychotic, and becoming overwhelmed by their voices. If they act on them it could prove disastrous.

Rowan is troubled. Her boyfriend is abusive but she doesn’t want to end the relationship – she’s too scared of being lonely. Can she find someone else to keep her company?

And, as if Clancy doesn’t have enough to worry about, another of her patients is paranoid and convinced she is being stalked. Is it just a symptom of her mental illness?

Because there is a stalker on the prowl and he is getting closer to his victim with each passing day.