Sapphire & Steel - Season 1 - Assignment I: Escape through a Crack in Time (2) (Episode 2)
Plot: Sapphire and Steel determine that Helen's bedroom is the location of a time break caused by the recitation of nursery rhymes. After narrowly avoiding a disaster, Steel boards up Helen's door to prevent the creatures inside from breaking loose
Episode Aired On:
Thursday, July 12 1979 45 years ago