- You may be looking for the titular scheme.
- The Doctor carries out his repairs on the TARDIS in a barn adjoining a derelict farmhouse on a Welsh mountainside. A sign outside reads W.D. PROPERTY / KEEP OUT.
- The Aborigines use boomerangs.
- Murray Stevens' surname changes to Lever in the fourth instalment. It is then changed back to Stevens for the rest of the story.
to be added
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