Cally states in this episode that her people sent her to Saurian Major. This is contradicted in Children of Auron (1980), where it is said she went to the planet in defiance of their isolationist policy.
This is the first episode to mention Gan's limiter.
This was the first episode to feature all of the original "seven". Perhaps as a result of this, it was the second episode recorded after Space Fall (1978).
This is one of only two episodes, the other being Bounty (1978), where Gan's full name is mentioned. On both occasions, it is mentioned by Zen.