Digital Spy have revealed ten Day of the Moon teasers, see below but beware of spoilers!
1. There's a touch of the 2000 film Memento about this episode.
2. "You're building me the perfect ****** and it still won't be enough!"
3. The Tardis swimming pool plays a vital role in a daring escape attempt.
4. Watch out for a terrifically creepy performance from Kerry Shale, who plays the disturbed Dr. Renfrew.
5. At least one of the shocking twists from last week's episode is called into question, but who can The Doctor really trust?
6. If you don't feel sorry for Rory at least once while watching this episode, then you're truly heartless.
7. Speaking of Rory, if you've been wondering whether he remembers his 2000 years as Amy's plastic guardian, then this episode provides a definitive answer.
8. "Night terrors...with a hotline to the White House."
9. The Doctor has a new experience, while River does something for the very last time.
10. The final scene contains an absolutely shocking twist.
Day of the Moon airs this Saturday at 6pm on BBC One!