Episode list

As her career path stagnates, Tennison (Dame Helen Mirren), now 54, feels pressured to consider her future. She copes with "modern" policing, including her current supervisor DCS Larry Hall (Mark Strong), who was once junior to her. While dealing with 24 murder cases simultaneously, she decides to personally assume leadership into the investigation into the cruel murder of a Bosnian Muslim refugee. Two Bosnian Muslim sisters, Samira and Jasmina Blekic (Ingeborga Dapkunaite), seek refuge in England after war ravages their homeland. They work in menial jobs and attract no notice until the elder sister, Samira, is found in an abandoned building, sadistically tortured and murdered. The coroner finds some of the torture scars were only days old but many were over a decade old. D. Super Tennison (Dame Helen Mirren) is so passionate about resolving this case, she takes it out of the hands of the DCI Simon Finch (Ben Miles) she put in charge. If Jane and her team can get to the bottom of old hatreds and past conflicts, and find Duscan Zigic (Velibor Topic), their prime suspect, they might be able to save the younger sister, Yasmina. But, are Jane Tennison's cases ever simple?

D. Super Tennison grieves over the death of young Yasmina and blames herself for not saving her. Although the prime suspect has confessed to the murders and is in jail, Jane is certain he is not the actual culprit and certainly, did not act alone. Jane and her photojournalist friend, Robert West (Liam Cunningham), visit Bosnia to find the truth about the sadist she knows is responsible for so much death. After meeting with her father Arnold Tennison (Frank Finlay), who had seen the camps in Nazi Germany, she and the photojournalist visit Bosnia, against orders, to learn more about the optometrist Milan Lukic (Oleg Menshikov) who interprets for the suspect. Various smug political half-wits attempt to silence Jane and halt her inquiries with the Official Secrets Act. Jane gets a timely pep talk from her dad, who tells her how much he admires her for always doing what she believes is right. Jane soldiers forward, putting her career and possibly, her liberty on the line to keep the promise she made to Yasmina. She is suspended but continues seeking evidence of the translator's fake identity and crimes.