Although broadcast fifth, this episode was presented as the fourth on the DVD release.
While this could have been to avoid drawing attention to the missing Episode #2.4 (1981), the DVD presented the first series by going from Episode 1 to Episode 3-5, acknowledging the gap of the missing Episode #1.2 (1980).
While this could have been to avoid drawing attention to the missing Episode #2.4 (1981), the DVD presented the first series by going from Episode 1 to Episode 3-5, acknowledging the gap of the missing Episode #1.2 (1980).