The Production Guide
Sound

Roll 197, recorded 18 May 1976. This tape was recorded over the sound for Mission Of The Darians (roll 681, 17 January 1975). We are in Command Center near the start of the episode, as Helena declares: "A collision course with a black dwarf?" and Koenig's frustrated "Come on, come on! I want to know what's pulling us off course." (Barbara can be heard saying "Mixing concrete right here, is that right?")

Roll 199, recorded 19 May 1976. This tape was recorded over the sound for The Infernal Machine (roll 643, 23 December 1974). We are in Command Center as they spot something on the screen. "Identify" says Koenig. We hear John Hug in the studio. When Koenig first sees the ship, he says "Wait a minute. That's a spaceship. Intercept." The middle line is cut in the final episode. We Brian's initial dialogue. "Can I come down and have lunch with you?" We hear Tony say "Weapons Section. This applies to missiles standing by for evacuation of something or other..." There are a five takes of slate 37, with a short bit of dialogue for Koenig just before he leaves to investigate the Swift. We then skip to the scene when Brian enters Command Center, up to "peek a boo".

Roll 201, recorded 20 May 1976. This tape was recorded over the sound for Space Brain (roll 6?9, 9 December 1974). We start at "peek-a-boo", and Brian noticing the yellow trolley. He notices the Moonbase computer is "the same as mine" (once he says "bigger than mine"). He leaves with Helena and Koenig, after some takes when somebody notices "the wheels are round the wrong way". We skip back to "peek-a-boo" and the yellow plastic wheels apparently for a wide shot. Then we have Maya and Tony talking about Brian and trying to open a channel.