S10E04Doctor Who season 10 episode 4: Knock Knock
Aired 6 May 201745 minRated TV-PG
6.7TMDB · 70 votes
Where to watch Doctor Who Season 10 in Australia
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Availability checked 16 November 2026.
What happens in “Knock Knock”
Why do floorboards creak? When a sinister landlord shows Bill and her friends the perfect houseshare, they have no idea what lies ahead... knock knock, who's there?
Episode summary: TMDB.
Before you watch
- It is episode 4 of 12 of season 10, so watch episodes 1 to 3 first.
- It runs about 45 minutes.
- Directed by Bill Anderson, written by Mike Bartlett.
- TMDB users rate it 6.7 out of 10 (70 votes).
Doctor Who trailer
The official trailer for the series (no preview of this episode has been published).
Play video: Doctor Who trailer
Cast and crew of this episode
- Director
- Bill Anderson
- Writer
- Mike Bartlett
- Guest stars
- David Suchet as The LandlordMariah Gale as ElizaMandeep Dhillon as ShireenBen Presley as PaulAlice Hewkin as FelicityBart Suavek as PavelSam Benjamin as Estate AgentColin Ryan as Harry
Credits: TMDB.
More from Doctor Who Season 10
Every episode of Season 10Doctor Who episode guide
Episode names, air dates, runtimes, stills and ratings: TMDB. Air dates are the first broadcast anywhere; where it streams is our daily Australian check.