Strike - Season 4

A mentally-disturbed young man wants Cormoran Strike to look into a murder he thinks he witnessed as a child. Concurrently, Robin goes undercover to investigate the blackmail of a Member of Parliament. (imdb)

Strike and Robin's startling discovery seems to confirm the story of the strangled child, but they're forced to leave the scene before they can properly investigate. (imdb)

The blackmail case turns into the investigation of a suspicious death. (imdb)

After ditching her husband, Robin becomes prone to panic attacks - although not when confronting a murderer. (imdb)