Review of the series that focuses on the way it uses time travel as a theme.

Analysis of the elements, compounds, and alloys for which the characters are named, and an episode guide.

As events unfold in 1980 Time itself is trying to change history. Sapphire and Steel must play out a scenario that happened fifty years before - to avoid the destruction of the entire human race.

All the clocks have stopped. Rob and Helen's parents have vanished. Two mysterious strangers arrive unannounced and tell the children they are their only hope of escaping from the ghosts that have invaded their isolated country house.

In their final serial Sapphire & Steel arrive at a seemingly abandoned roadside café where time has stopped and the only clue is two humans who claim to be from 1948. How they got there, they don't know.

The time agents receive a puzzling assignment at an apartment block where time is poised to attack.

When the ghost of a World War One soldier begins to haunt an old railway station, Sapphire and Steel suspect the location is a recruitment ground for the dead