Caprice ended up volunteering herself for a challenge earlier today, simply by going to the diary room.

She was given clues by Big Brother, and eventually found that pulling one of the glass rods in the garden wall caused a door to slide open - near to where the carriage was parked during the royal task - revealing a long corridoor.

At the end of the corridoor was a small room, in which Caprice became comfortable not knowing what to expect - and she certainly didn't expect what happened next...

...it went up in the air, like a lift!

Once up there she caused quite a stir for the housemates, but soon noticed a huge screen across the compound which only she could see, and said that Big Brother wanted to reveal a secret with her and only her.

But before this secret would be revealed, she has to unravel the next clue which is "Knowledge can only be achieved through reflection. Seek out the circle of greater wisdom, it will open with the words, 'You're looking mighty fine'."

The housemates are all trying to ask her for more information, especially what she saw of the outside world, but obviously she's not allowed to say and really wants to know what's going to happen to her next!

The second hidden room is...
The Eye can reveal that it's the small mirror in the wall to the left of the diary room door which leads to Caprice's second part of the task.

view of the same area during BB5, and CelebBB

View of the mirror which has since been shown on E4's live coverage

After looking at 100's of screencaptures taken during BB5, The Eye has spotted that there's a clear difference in that part of the wall - just it doesn't appear to have caught the attention of Caprice yet. Especially with mother-in-law-from-hell Jackie just sitting across the room, making it hard for her to say the phrase 'You're looking mighty fine'.

It'd seem that this leads through to a second room, possibly a small tunnel through to where the "bedsit" room was during Big Brother 5, where Michelle and Emma stayed for several days before returning to the main house and that big fight!