Day 519: Nightmare of Eden Part 2

It's interesting to note how this story plays out as well. Consider the character of Captain Rigg. He's one of the first characters that we encounter on the ship, plays himself as an authority figure, and although he is not exactly trusting of the Doctor, he still acknowledges that he is someone who will be able to get the job done. He comes across as the secondary protagonist for the story, the sort of character that we'll wave goodbye to once the story is conpleted, never to see again. It's odd, then, that he is rendered indisposed halfway through Part 2 of this story. He accidentally ingests a drug, causing him to be 'high' for the rest of the episode, and if memory serves, will finally be completely disposed of later in Part 3. It shows once again that this story is evolving over time, and that we can never fully expect how the conclusion shall fully manifest itself in this Nightmare of Eden.