The ninth series of the British science fiction extends to an adventure of Vikings, Ghosts and the Daleks. Meanwhile the Doctor is faced with Missy who is ready to plague him again.
In terms of long-lasting psychological childhood trauma, Under the Lake ranks with the gas mask kid and the giant maggots, doubly so when you consider the final image.
Toby Whithouse culture-jams haunted-house intrigue with classic base-under-siege tension. We've seen both formats on Who before, but never quite like this. As always with Whithouse, there's fizzing, funny dialogue and a cracking ensemble.
"Under The Lake" was a competent episode but somewhat heavy going, and it'll be good to see things opened up in concluding part "Before The Flood". Deep breaths, all.
Writer Toby Whithouse successfully expands the mystery at the episode's core in such a way a continuation feels more like something the story earned, rather than an obligation to perfunctorily expand the scope of a tale that doesn't necessarily need it.