What "Doctor Who" 4-th episode about
Bill and some of her friends decide to move in together, and find what seems to be the perfect house. However, the absurdly cheap rent, and a decidedly creepy landlord suggest that domestic bliss might not yet be on the cards. The Doctor believes something is seriously wrong with his assistant's new home, plagued as it is with strange drafts and oddly creaky floorboards, and that's without considering the ominous tower found at the very heart of the building - one that doesn't seem to have an entrance.
Episode number: 4
Episode name: "Knock Knock"
Episode release date: 6 may 2017 at 20:00
Status: aired
Rating: 7.3
