Strike is approached by a woman asking for help to find her mother, Margot Bamborough, who went missing in 1974 when a psychopathic serial killer stalked the streets.
| Name | Type | Role | |
|---|---|---|---|
| Tom Edge | Writer | ||
| Ruth Sheen | Guest Star | Pat Chauncey | |
| Jonas Armstrong | Guest Star | Saul Morris | |
| Abigail Lawrie | Guest Star | Margot Bamborough | |
| Ian Redford | Guest Star | Ted Nancarrow | |
| Linda Bassett | Guest Star | Joan Nancarrow | |
| Sophie Ward | Guest Star | Anna Phipps | |
| Samuel Oatley | Guest Star | DI George Layborn | |
| Fionnula Flanagan | Guest Star | Oonagh Kennedy | |
| Sutara Gayle | Guest Star | Kim Sullivan | |
| Susan Tully | Director | ||
| Tom Burke | Actor | Cormoran Strike | |
| Holliday Grainger | Actor | Robin Ellacott |