This episode wasn't meant to be the last of its season. Instead, it was supposed to be followed by another serial called "Shada", as it was considered the better story. However, because of a strike, filming for that serial couldn't be completed, thus making this episode the finale by default.
This episode was watched by 10.4 million viewers on its original transmission.
While filming Soldeed's final scene, Graham Crowden thought that they were doing a camera rehearsal, which is why he gave an over-the-top performance. Because there was no time to shoot that scene again, and because director Kenny McBain felt that Crowden's performance was in-character, the take was used.