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For the fourth day in a row a brand new Fifty Shades of Grey clip has been unveiled, and this time it's all about Christian Grey's sex dungeon.[related]

In the sneak peek of the film, Christian is showing Ana around his house when they come to an abrupt halt outside his 'playroom'.

"It's behind this door," says Grey. "Like your Xbox and stuff?" a ridiculously naive Ana replies.

Come on, have you really not caught on by now that this guy is a sexaholic?!

But don't worry, the helicopter is on standby for whenever Ana wants to leave.

Fifty Shades of Grey is out in UK cinemas February 13.