Are the houses getting posher for episode five?
Watch an exclusive snippet from episode five. Some well posh celebrity lives in this well posh house, or they could be a bit common and faking it.
Who do you think it is? Watch the clip then get to our Twitter here and have your say, using #ThroughTheKeyhole.
Stop messing, start guessing.
Catch episode five in full on your telly box on Saturday 28th September, when all will be revealed.
See the photos from episode four
Watch the bits you didn't see on telly