The Fourth Fifty Shades Of Grey Clip Introduces The Red Room of Pain

'It's a clip where Christian shows Ana something very big,' is how E.L. James described the latest clip from *Fifty Shades of Grey. *But no, it's not what you're thinking, you filthy lot. The 'something very big' is in fact the kinky billionaire's Red Room of Pain.

Yes, the latest teaser sees Anastasia Steele being introduced to Mr Grey's hidden dungeon for the first time. It follows a preview of the scene when the couple first metat his office, a clip of the pair exchanging rope innuendos at the hardware store and a snippet of them discussing those "singular" tastes in a hotel room.

We're now in a state of heightened anticipation with just two weeks before the release of the big screen adaptation of the erotic best-seller. And reports suggest *Fifty Shades of Grey *has already sold a whooping 2.75 million tickets in pre-sales. Have you got yours?

Watch the fourth clip below...

Want more Fifty Shades? Check out the swoon-worthy gallery...