Episode Guide

• Shooting script dated 13th July 1976. Revised 27th July.
• A "Double Up Helena" script, filmed simultaneously with A Matter of Balance. Shooting schedules dated 30th July, 16th August. Filmed 6th Aug- 24th Aug1976
• For the scene when the Maya animal throws Alan in Medical, a low camera angle meant a false ceiling was installed. The stuntman (Tim Condren) bounced off a trampoline, but was so intent on missing the ceiling he landed two feet short of the mat. He broke two teeth and his collar bone.
• Edited into the 1982 compilation movie Cosmic Princess

• The Menon cruiser is a redressed version of the Archanon spaceship from Mark Of Archanon with a new nose section. In long shots it is docked with the 22 inch Eagle. Closeups of the 44 inch Eagle docked use a larger version of one bulkhead built for this episode.
  

• The hangar crash scene severely damaged one of the 44" Eagles. Full sequence in pictures

• The data bank cartridges have arabic numerals.
• "Area Copernicus of the Copernicus depression". There is a Copernicus crater on the Moon; obviously it must be in walking distance of Moonbase Alpha. Copernicus is incorrectly called a mountain in Journey To Where.
• The Betanon scout cruiser is said to be 12 parsecs from the mothership Admenon when it entered the space warp. That is considerably farther than the 5 light years the Moon moves. Although they use space warps, they evidently have faster than light capabilities anyway.

Alpha Technology:

• Medical thermographic scans are used. They are also featured in Breakaway, Matter Of Life And Death, Ring Around The Moon, Another Time Another Place, Missing Link, Force Of Life and Dorzak.
• The Alphans capture a faster than light spacecraft and a space warp detector. The space warp detector is seen in The Lambda Factor (in the Engineering workshop), Devil's Planet (in Eagle 1, showing a street plan) and The Immunity Syndrome (in Eagle 4).
• The Eagle remote control appears on Alan's desk in Command Center and in the Eagle 4 cockpit.
• A lunar tank from The Infernal Machine is visible in the Eagle hangar. Also visible are side boosters from New Adam, New Eve and the spine boosters from The Metamorph.

Maya transformations:

• Maya changes into her father Mentor, from The Metamorph. Although scripted as such, it is plainly not Brian Blessed and could be another Psychon (the costume is Dorzak's).

Aliens: