The snoops have been challenged to perfect their fibbing today, as they take on a cover story and secret identity in preparation for tonight's Big Brother Ball.

Seven tall tales are concealed around the House and the Agents must find one each and prepare for tonight's covert operation.

The first story each super spy stumbles across is for their eyes only and swapping of identities is strictly forbidden, although they are free to reveal their discuss their new identities if they so choose.

Big Brother will supply the spooks with cunning disguises to suit each of their tales, so they'll be completely unrecognisable for their gathering tonight.

Shouldn't be a problem, they're always accusing each other of being two-faced.