Episodes 9 to 16 from the 1970s TV series following the exploits of crimefighters Harry Rule, Paul Bouchet and Countess Caroline di Contini. In 'One and One Makes One' the Protectors come up against some duplicitious thinking when they agree to rescue an imprisoned Canadian agent. 'See No Evil' has the team get involved in a blackmail case. 'Balance of Terror' sees Harry, Paul and the Contessa struggle to save London from the devastation of biological warfare. 'King Con' finds our heroes involved in a con game as they attempt to retrieve an expensive antique. In 'The Big Hit' Paul and the Contessa narrowly escape assassination attempts and try to warn Harry that he is probably next. 'Thinkback' has Harry and the Contessa involved in a suspicious car crash. 'The First Circle' sees a Vietnam veteran come to the team for help. Finally, 'Chase' finds Harry running for his life when a blackmail investigation turns sour.