Private detective Cormoran Strike (Tom Burke) is visiting his family in Cornwall when he’s approached by a woman, Anna Phipps (Sophie Ward) asking for help finding her mother, Margot Bamborough (Abigail Lawrie), who went missing under mysterious circumstances in 1974.

Strike’s never tackled a cold case before let alone one forty years old, but despite the slim chance of success, he’s intrigued and takes it on, adding to the long list of cases that he and his partner in the agency Robin Ellacott (Holliday Grainger) are currently working on. Robin herself is also juggling a messy divorce and unwanted male attention as well as battling her own feelings about Strike.

As Strike and Robin investigate Margot’s disappearance, they come up against a fiendishly complex case with a psychopathic serial killer and witnesses who cannot all be trusted. They learn that even cases decades old can prove to be deadly.

Sue Tully is directing. Her credits include Too Close, Strike - Lethal White, Line of Duty, Tin Star, The A Word and The Musketeers.

Ruth Kenley-Letts (Too Close, Strike, You Don’t Know Me), J.K. Rowling (Fantastic Beasts and Where to Find Them, Strike, The Casual Vacancy), Neil Blair (Fantastic Beasts and Where to Find Them, Strike, The Casual Vacancy) and Tommy Bulfin (for the BBC) executive produce based on a script by Tom Edge (You Don’t Know Me, Vigil) who also wrote Strike - The Silkworm, Strike - Career of Evil and Strike - Lethal White. Jenny van der Lande (Too Close, You Don’t Know Me) is story producer and Alex Rendell produces.