"Kill the Moon"

"Kill the Moon" is, on the surface, a story of the Doctor and some monsters. It also has hallmarks of that old Troughton staple, the base-under-seige story. The situations that form the plot are easy for anyone to follow. Yet the combination of all these things somehow results in something really striking, proving that simplicity does not equal stupidity. "Kill the Moon" is a début story for both director and writer and this fresh take really makes the story work. Peter Harness writes each scene with total conviction, which makes the (frankly bonkers) revelation of the story – that the Moon is, in fact, a giant egg, completely convincing. Harness manages to bring out the mythic resonance of such a plotline, which has precedents in folklore around the world, to make the concept seem epic, rather than silly.

Paul Wilmshurst realises Harness's vision with great skill, making the spider-germs truly terrifying. An obvious precedent is the superficially scary, but ultimately silly 2011 film Apollo 18, but this story is better in every conceivable way. The location filming in Lanzarote gives the lunar surface a real sense of depth and Wilmshurst deals excellently with the subtle shifts in mood; horror, tension and wonder, with the unforgettable sight of the Moon hatching being particularly breathtaking. The performances from the limited cast are excellent, although again, it's a shame that an fine actor like Tony Osoba is used so little, in his third appearance in the programme (in easily his best story!) The main guest star is the brilliantly charismatic Hermione Norris, who makes Lundvik a very relatable character, despite her archetypal function in the plot. We also have the return of Ellis George, showing a whole new side to Courtney.

However, what elevates the story into a whole new level are two key scenes. Once the true nature of the Moon is discovered, there follows a debate over whether or not to, well, kill the Moon. This recalls a similar sort of discussion in "Cold Blood", but the writing here is so much better. The decision to let the Earth vote leads to some wonderful visuals as the lights on the globe blink out. In all this, the Doctor has done what he couldn't do on Mars, or even Pompeii – he leaves it entirely to the humans. The Doctor's wonder at a new piece of history being freshly revealed to him is infectious – until Clara reveals to him exactly what she thinks of this manipulation.

This scene is excellently written, but is only improved by outstanding performances by the regulars, of the same standard as Steven's taking leave of the Doctor in The Massacre. We have seen the Doctor detached from humanity and we have seen the human he is closest to pulling him back to Earth and reminding him of his duties to his favourite planet. Jenna Coleman and Peter Capaldi have never been better than in this story, a remarkable feat, indeed.

"Kill the Moon" is a brilliant first story for its creators and another highlight of what is turning out to be a great season.

NEXT: "Mummy on the Orient Express"