This is the much-anticipated prequel to award-winning global hit Prime Suspect. Rewind to 1970s London to portray the early career of the formidable DCI Jane Tennison (Stefanie Martini), the role that established Dame Helen Mirren as a household name. We meet Jane as an ambitious 22-year-old probationary officer, starting out as a WPC in a world where chauvinism and rule-bending are the norm.