Based on a storyline in Gideon's March. Alfie Bass portrays an elderly German Jew who has suffered at the hands of the Nazis in WWII. There is a state visit by the German President and, as a chemist, he gets his hands on 10 oz of nitro-glycerine. Enough to kill his target and possibly hundreds more at the parade in Whitehall where Gideon's wife and son are also watching. Also features Gerald Flood as Deputy Commissioner Rae Cox.

New storyline. Four teens are led into a life of violence by Anton Rodgers who has upper class pretensions and lives on a Chelsea houseboat with parties every night. Rodgers plays a contemptuous sadist whose idea of fun is hurting people, mirroring teen crime at the time. This was the last show and the series ended on a high note. Also starred Derek Fowlds and Annette Andre.