Sapphire & Steel was one of the most genuinely original, not to mention thought-provoking, atmospheric and unsettling, series ever broadcast. All but forgotten now, except by those who saw it when it was on air, it really is ripe for rediscovery. Very slow moving and extremely minimalistic by today's standards, this is actually one of it's greatest strengths as it allows a superbly foreboding atmosphere to build up and the fact that nearly all the episodes were filmed in the studio with sparse sets and a very small cast, helps to add to the claustrophobic and spooky feel. The characters of Sapphire and Steel are wonderfully mysterious and enigmatic characters, it's never really explained who or what they are or where they come from they just turn up at the start of each adventure and the occasional oblique references to 'other elements' just makes them all the more tantalising. Joanna Lumley and David McCallum are superb in their roles and have an extraordinary chemistry together. The stories themselves are all highly imaginative and thought-provoking, dealing with such concepts as time being a physical force that can break into the present and cause havoc, a malevolent 'darkness' that feeds on the emotions of dead WW1 soldiers, a couple from the future living in the present in at time bubble as an experiment but being terrorised by the force that keeps them there, a faceless shape that exists in every photograph ever taken.....that's just a small example of the sheer strangeness and imagination on display in this wonderful series. The series has a reputation for being scary, and it certainly lives up to it - it's the only series I've ever seen that actually manages to induce that childhood feeling of being scared of the dark and the feeling that there are strange 'things' lurking just out of sight in the shadows. The direction is simply stunning - lots of shots of dark empty corridors and shadowed rooms. The sets, while minimal, are still very effective - the old house in the first story being particularly convincing, the music is often spine-chilling (especially in the second story, which I also think is the masterpiece of the series) and the special effects, while quite simple still hold up pretty well today. Overall, I can't praise this series enough - it is a totally unique, still feels incredibly fresh and original today, and still manages to be frightening after all these years. Worth every penny.