Strike has never tackled a cold case before, let alone one forty years old. But despite the slim chance of success, he is intrigued and takes it on; adding to the long list of cases that he and his partner in the agency, Robin Ellacott, are currently working on. Plus the pair are still battling their feelings for one another, while Robin is also juggling a messy divorce and unwanted male attention.As Strike and Robin investigate Margot's disappearance, they come up against a fiendishly complex case with leads that include tarot cards, a psychopathic serial killer and witnesses who cannot all be trusted. And they learn that even cases decades old can prove to be deadly . ...

Robin decides that the agency can't help with this - and thinks nothing more of it until a few days later, when she reads the shocking news that Edie has been tasered and then murdered in Highgate Cemetery, the location of The Ink Black Heart.Robin and her business partner Cormoran Strike become drawn into the quest to uncover Anomie's true identity. But with a complex web of online aliases, business interests and family conflicts to navigate, Strike and Robin find themselves embroiled in a case that stretches their powers of deduction to the limits - and which threatens them in new and horrifying ways . . 

The Universal Humanitarian Church is, on the surface, a peaceable organisation that campaigns for a better world. Yet Strike discovers that beneath the surface there are deeply sinister undertones, and unexplained deaths.In order to try to rescue Will, Strike's business partner Robin Ellacott decides to infiltrate the cult and she travels to Norfolk to live incognito amongst them. But in doing so, she is unprepared for the dangers that await her there or for the toll it will take on her . . ...