The fiendishly clever script is packed with Moffat’s trademark dazzling wordplay and several guffaw-out-loud gags, while there are two scenes that will have viewers sniffling on their sofas. Best of all, the story makes the Doctor’s pepperpotty arch enemies truly scary again and contains several killer twists.

Elsewhere, the opening credit sequence has been subtly tweaked and although there’s no mention of “timey-wimey”, there is an “explodey-wodey”. Back with a bang indeed.