Tell me, have you ever tried Venusian hopscotch?
This time, the Dalek story title wheel lands on an alliteration, but at a stretch, it’s possible that Terry Nation’s “Death to the Daleks” (Story Production Code XXX) actually could apply to the story itself, since the dozen or so Daleks in the story do perish at the end. Alas, as with most things Dalek in the early 1970s, the title, and the story, aim for the grandiose and provide the pedestrian.
In keeping with one of Nation’s favored themes, a terrible plague threatens the outer colonies of almost all species. Only one planet, Exxilon, inhabited by a Stone Age civilization, possesses the cure in quantities sufficient to save the millions who suffer from the disease. Both the humans of the Marine Space Corps and the Daleks (of, um, the Daleks) want this miracle substance, parrinium, and would gladly fight each for it, if only their spaceships and energy weapons worked once they neared Exxilon.
For even the TARDIS succumbs to the energy-draining powers of the “forbidden city” of the Exxilons’ ancestors, who were old when the universe was young. Their city, imbued with a form of bio-technological sentience, was meant to be their crowning achievement, but in standard science fiction fashion, it realized they were an impediment to its efficient functioning and killed off most of them. The remnants worship the city, reduced to chanting and incense-heavy sacrificial ceremonies in its name.
Terry Nation must hold some grudge against the TARDIS, as for the second story of his in a row, the TARDIS runs out of a vital component (here energy, previously oxygen) and remains useless to the Doctor. Even in “The Daleks” back in 1963, he sees fit to render the blue box hors de combat, with the Doctor pocketing the fluid link to force everyone to investigate Skaro to find a replacement. The notion of the inviolable TARDIS never quite took with Nation, it seems, and he uses whatever plot device he can to get the Doctor out of its safe confines. At least the Doctor has an oil lamp handy with which to guide his way out of the blacked-out TARDIS, as one does…