Sapphire & Steel charted the efforts of two mysterious 'agents', named Sapphire (Joanna Lumley) and Steel (David McCallum), as they were given a number of 'assignments'. featuring everything from a faceless man and a vengeful soldier, to living nursery rhymes and a time-trapped motorway cafe. The series was innovative, intelligent and terrifying, and it has stayed in the memories of all who saw it. In this guide, Richard...