Sapphire & Steel (1979)

Episode Overview

Title: Assignment III: The Creatures' Revenge (4) Plot: Silver devises a method to access the capsule, leading to a journey where he brings Sapphire and Steel into a futuristic experimental pod. However, the couple is missing, and instead, they encounter a fully-grown infant. Sapphire realizes that this oversized baby is a time-manipulated changeling. Sensing the presence of the three time agents as a danger, the entity governing the changeling orders it to eliminate them.