Helen Mirren reprises her iconic role as the formidable Detective Superintendent for the last time. When the body of missing schoolgirl Sallie Sturdy is discovered the hunt for her killer begins. But as Jane Tennison & her team work to identify their prime suspect the emotional fallout from the murder starts to take its toll on the world weary detective. With an addiction to alcohol Tennison is desperately trying to keep hidden & pressure mounting on all sides the cracks are starting to show. With Tennisons superiors clamouring for her early retirement her loyal team of D.I. Traynor D.S. Simms & D.C. Cox close ranks to protect their respected governor. As Tennison struggles to redeem herself professionally she must find redemption personally But if the will to fight has gone what hope if there of recovery?