S07E04Doctor Who season 7 episode 4: The Power of Three
Aired 22 September 201242 minRated TV-PG
Where to watch Doctor Who Season 7 in Australia
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Availability checked 16 November 2026.
What happens in “The Power of Three”
The Doctor and the Ponds puzzle an unlikely invasion of Earth, as millions of sinister black cubes arrive overnight, almost like presents falling from the sky. But what are they, what’s inside them and most importantly, who sent them? With the international community at a loss, it’s left to the Doctor to unearth who is behind the mystery.
Episode summary: TMDB.
Before you watch
- It is episode 4 of 13 of season 7, so watch episodes 1 to 3 first.
- It runs about 42 minutes.
- Directed by Douglas Mackinnon, written by Chris Chibnall.
- TMDB users rate it 7.0 out of 10 (69 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
- Douglas Mackinnon
- Writer
- Chris Chibnall
- Guest stars
- Arthur Darvill as Rory WilliamsSteven Berkoff as ShakriMark Williams as Brian WilliamsJemma Redgrave as Kate StewartSelva Rasalingam as RanjitAlice O'Connell as LauraPeter Cartwright as Arnold UnderwoodDavid Beck as Orderly 1
Credits: TMDB.
More from Doctor Who Season 7
Previous · S07E03A Town Called Mercy15 September 2012
Next · S07E05The Angels Take Manhattan29 September 2012Every episode of Season 7Doctor 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.