Written by Mike Bartlett
"Knock on wood."
| Episode Title | Premiere Date |
| Knock Knock | 06/05/2017 |
Why do floorboards creak? When a sinister landlord shows Bill and her friends the perfect house-share, they have no idea what lies ahead... knock knock, who's there?
| Character | Cast |
| The Doctor | Peter Capaldi |
| Bill | Pearl Mackie |
| Nardole | Matt Lucas |
| Landlord | David Suchet |
| Eliza | Mariah Gale |
| Shireen | Manddep Dhillon |
| Harry | Colin Ryan |
| Paul | Ben Presley |
| Felicity | Alice Hewkin |
| Pavel | Bart Suavek |
| Estate Agent | Sam Benjamin |
| Role | Crew |
| Writer | Mike Bartlett |
| Director | Bill Anderson |
| Producer | Nikki Wilson |
| Executive Producer | Brian Minchin |
| Executive Producer | Steven Moffat |
