Daisy Chain (Sapphire & Steel)

Daisy Chain
Big Finish Productions audio drama
Series	'Sapphire & Steel'
Release no.	2
Written by	Joseph Lidster
Directed by	Nigel Fairs
Produced by	Jason Haigh-Ellery Nigel Fairs
Length	120 mins

Daisy Chain is a Big Finish Productions audio drama based on the popular British science fiction television series Sapphire & Steel.

An ordinary house with a seemingly happy family hides a secret that might destroy them, as well as Sapphire and Steel. The operatives must find the right link in a chain of cause and effect — but to break it, someone may have to be sacrificed.

...
Wikipedia