Big Brother’s final surprise: SHOCK final three twist is revealed

Big Brother’s big surprise: A shock final three twist is revealed as the stars are set to compete in ‘last epic challenge’

Big Brother star Sarah McDougal’s eviction on Monday night saw the top four head into the final stage of the competition.

And ahead of their last day in the house, the remaining contestants were left blindsided by a surprise twist.

Just after Sarah was evicted, Daniel Gorringe, Mat Garrick, Sophie Budack and Chad Hurst were told how the final three would be decided.

Scroll down for video   

Big Brother’s big surprise: A shock final-three twist on Monday night, after Sarah McDougal’s eviction. Pictured from left: Sophie Budack, Chad Hurst, Mat Garrick and Daniel Gorringe

After congratulating the contestants on making it to the end, Big Brother revealed his final surprise.

‘Standing between you and the final three is one last epic nomination challenge. And it’s winner takes all,’ he said. 

‘The winner will automatically be in the final three. The other three housemates will be up for nomination. 

'It's winner takes all': The housemates were shocked to learn that the next nomination challenge winner would have ultimate power ahead of the public vote

‘It’s winner takes all’: The housemates were shocked to learn that the next nomination challenge winner would have ultimate power ahead of the public vote

'Unreal!' Chad and his rivals applauded the news, but were also wary of the possible consequences of the challenge

‘Unreal!’ Chad and his rivals applauded the news, but were also wary of the possible consequences of the challenge

‘The winner of the challenge will then get to evict the seventeenth housemate from my game; they will decide who the final three are before Australia decides who wins.’

As the housemates applauded, Daniel Gorringe said, ‘That’s pretty good!’ Chad Hurst added: ‘Unreal! Winner takes all!’

In a trailer for the finale, the housemates are seen running up and down a set of stairs to make sure metal balls remain on a sloping track. 

Final challenge: In a trailer for the finale, the housemates are seen running up and down a set of stairs to make sure metal balls remain on a sloping track

Final challenge: In a trailer for the finale, the housemates are seen running up and down a set of stairs to make sure metal balls remain on a sloping track

Gone: Sarah McDougal (left) was evicted on Monday night. Pictured with Mat Garrick

Gone: Sarah McDougal (left) was evicted on Monday night. Pictured with Mat Garrick

The remaining four housemates are now competing for a reduced prize of $234,656, after Kieran Davidson stole more than $15,000 from the winner’s kitty last week.

Australia will decide who wins by voting for one of three remaining contestants during the live finale on Tuesday.

Big Brother continues Tuesday at 7:30pm on Channel Seven  

Tune in: Big Brother continues Tuesday at 7:30pm on Channel Seven. Pictured: Sonia Kruger

Tune in: Big Brother continues Tuesday at 7:30pm on Channel Seven. Pictured: Sonia Kruger