Manhunt.: Series 2, Night stalker.
Fresh off his success catching a headline-grabbing killer, DCI Colin Sutton (Martin Clunes, Doc Martin) is asked to review the long-running inquiry into a notorious serial rapist, whose 17-year reign of terror has left the elderly of Southeast London living in fear. Based on the real-life story, this gripping miniseries explores how Colin came late to the case but helped crack it open at last.-amazon