From Amazon Prime:

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.

From Amazon Prime you can download Season 1 of this Prime Suspect prequel. Each of the 6 episodes last about 45 minutes.

Every episode offers tense action and interpersonal interactions. All 6 episodes form one complete story. Along the way there are romances, deaths, male chauvinism, crimes, drugs all of which lead to a suspenseful conclusion.

Well worth the watch.