This episode was never broadcast, but was instead re-edited into a single episode alongside the third episode, Crisis. The completed edit retained the third episode's title, but the fourth episode's credits, which leads to anomalies such as Douglas Camfield being credited as the director but not Mervyn Pinfield.

The episode was "recreated" for the DVD release of the story, based on the original scripts. The cast and crew presented for this episode entry are those that worked on the recreation.