EASTENDERs legend Shaun Williamson was given a secret mission to trick his Celebrity Big Brother housemates in a killer nomation twist.
The actor was told to pretend to be a bag of nerves as the other celebs entered the house and then convince them to do things like rub his chin and pour water over his head.
Big Brother told him: "BB has a very special secret mission for you and to succeed you must draw on your years of acting experience to transform into the most nervous housemate in the history of Big brother.
"As each of your fellow celebrity housemates enter the house it must be instantly noticeable that you are suffering from a severe case of first night nerves.
"In fact, the most housemates that enter, the more your nerves should escalate.
"As well as showcasing your inner angst at all times, Big Brother will also give you a series of nerve wracking challenges throughout the evening.
"As if nerves weren't bad enough, you will also be hearing voices in your head as Big Brother will be talking to you secretly through a secret earpiece.
"Shaun if you are successful in your mission you will win a very special reward. However, if you fail you will get a punishment that will make your first night nerves look like a stroll through Albert Square."
As Girls Aloud singer Sarah Harding in the house, BB gave him a mission to get her to sing Something Inside So Strong with him.
After they sang a few lines from the track, he then spilled some water as his hands shook and told Made In Chelsea star Sam Thompson about how he nervous he was.
After Derek Acorah entered the house, BB told Shaun to start shaking with nerves and get Derek to give him a hug to calm him down and claim it was a result of his "special aura".
However, the hug wasn't long enough and BB told him to get another one.
Big Brother then told him that he had to get Chad Johnson to rub his chin as his nerves keep getting worse.
BB told him: "Shaun you should get Chad to rub your chin as it's one of the things that calms you down on the outside world."
After he got Chad to do it, Shaun gulped down a glass of champers as it seemed like the challenge was getting to him.
Big Brother stepped things up a gear after Brandi entered the house and told him he had to get her to pour a glass of water over his head.
He told her: "I'm overheating a bit" before taking off his suit jacket.
BB then made him get Brandi to pour MORE water over his head telling him: "Big Brother thinks you need to get wet."
"You are too dry, Big Brother is not happy."
The final twist in the challenge comes as Big Brother tells him: "Shaun you should choose one housemate to become your rock, this means that you're not allowed to leave their side."
As Shaun stalls, Big Brother tells him he must do it "immediately" and tell the housemate "over and over that they are your rock and the only thing that calms you down".
He continued to stall until he finally picked Gogglebox's Sandi Bogle and she rubbed his arm and said: "I said to you when I walked in that I've got you back babes."
However, it later became clear that there was a glitch with his ear piece.
The doors then open for a champagne garden party but Shaun has been challenged to keep Sandi inside the house.
He puts his arm around her and says: "Just stay one sec, just trust me."
Big Brother then repeatedly tells him that he needs to keep Sandi inside, despite the raging party going on outside.
He pretends to have a panic attack and the Gogglebox star stays with him to support him.
On Big Brother's Bit On The Side, Rylan Clark-Neal revealed that if Shaun succeeds in keeping himself and Sandi away from the party then both of them will win immunity from the first set of nominations.
However, the pair will then have to pick two housemates for a killer nomination.
If Shaun fails the challenge, they won't get immunity but he'll still have to nominate one housemate for a killer nomination.
However, viewers won't find out if Shaun has completed the challenge until tomorrow night.
Got a story? email [email protected] or call us direct on 02077824220.
We pay for videos too. Click here to upload yours.