Doctor Who's return to the realms of sci-fi appears to have been short-lived. Team TARDIS may have been saving a spaceship this week, but episode 6 will be back on solid ground.
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Drawing on the history of planet Earth once more, the gang touch down in Pakistan in 1947 – the height of the Partition.
Yaz will be central to this story, as she's seen meeting her grandma and hugging younger versions of family members thanks to the wonders of time travel. This throws up a myriad of dangers, however, as the Doctor warns that things could change if she puts a foot wrong – "Tread softly, you're treading on your own history."
In a nod to the title of the episode 'Demons of The Punjab,' an unknown voice is heard asking: "How did we bring demons on ourselves?" suggesting there's more to this tale of the historical event than we might have been taught at school.
While Yaz is learning about her family's roots, Ryan's mission is to go hunting for whatever villains are lurking and it looks like he's on his own.
But the biggest mystery the trailer throws up is the Doctor appears to be unexpectedly zipping between places without knowing why. It seems to be serious though, as she visibly grapples with a stinging headache.
Doctor Who continues next Sunday (November 11) on BBC One.
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