This season of Doctor Who - a definite step up from recent years - appears to have settled into a state of comfortable mediocrity.
That is, okay - but largely forgettable - episodes where the best thing about them is new companion Bill (Pearl Mackie).
Next week's promo blurb reads:
Bill is moving in with some friends and they’ve found the perfect house – so what if it’s strangely cheap to rent, and the landlord is a little creepy? The wind blows, the floorboards creak, and the Doctor thinks something is very wrong. What lurks in the strange tower at the heart of the building – and why can’t they find any way to enter it?