The script of what is still the best Cyberman story, published in 1989 at a time when the episodes were still lost. There's a brief introductory interview with Davis (and a few words also with script editor Victor Pemberton) pointing out the roots of the story in Erich von Däniken, and the advantages of using very few sets and of not giving too much away. Though actually what struck me was that this is partially a reboot, the first time a season had opened without William Hartnell, and so there are a couple of background information moments - the Doctor's age, and his thoughts about his family - that we don't often get. Victoria also gets more action than usual, though Jamie is more comic relief and Doctor's boyfriend. Interesting to approach it from a different angle.