As Strike (Tom Burke) runs down the story of a disturbed young man (Joseph Quinn) claiming to have witnessed a murder in his childhood, Ellacott (Holliday Grainger) goes undercover clerking for the Minister of Culture (Robert Glenister), who asserts he's being blackmailed. The seemingly disparate cases will stunningly dovetail in this adaptation of the fourth Robert Galbraith (J.K. Rowling) novel; Nick Blood, Sophie Winkleman, Christina Cole, Natalie Gumede co-star.4 episodes on 2 discs. 4 hrs. Widescreen; Soundtrack: English.