Birdman showcases Hayder at her spine-tingling best as beloved series character Jack Caffery tracks down a terrifying serial killer. In his first case as lead investigator with London's crack murder squad, Detective Jack Caffery is called on to investigate the murder of a young woman whose body has been discovered near the Millennium Dome in Greenwich, southeast London. Brutalized, and mutilated beyond recognition, the victim is soon joined by four others discovered in the same area - all female and all ritualistically murdered. And when the postmortem examination reveals a gruesome signature connecting the victims, Caffery realizes exactly what he's dealing with - a dangerous serial killer.