This episode features the first freeze-frame cliffhanger used in the series.
This is one of the few episodes to not begin with a reprise.
The Thal soldiers were originally supposed to be boys aged 15 or 16 to illustrate the youth of those fighting in the war, but this was later changed to make them appear more mature.
A stunt double for Elisabeth Sladen was hired for Sarah's fall from the scaffolding, but David Maloney discovered that she would be falling eight feet, while Sladen had fallen ten feet in rehearsals. Maloney ultimately decided to conclude the episode with a freeze frame ending.
This episode was watched by 10.5 million viewers on its original transmission.