Earlier this week the housemates nominated Chanelle, Hannah, Joe and Rebecca to face eviction. Since Tuesday the British public had been voting to save.
The housemates had no idea that an eviction was taking place last night, until presenter Emma Willis announced live to the house that the person with the fewest votes and third to be evicted was Rebecca.
Following the announcement, Rebecca said her goodbyes and left the house, greeted by Emma and mainly boos from the crowd.
Rebecca told Emma on being evicted: "It's disappointing...it is what it is."
Meanwhile, back in the house, there was a mixed reaction.
Kieran seemed tearful as he told the group: "Can everyone stop getting upset because I don't want to get upset. I'm not getting upset. Someone's gotta go each week."
And Chanelle laughed: "I can just imagine her high pitched voice now when they're showing her best bits and worst bits, she'll be doing 'Oh my God!'"
Later on, in scenes that aired tonight, Tom tried to talk to Kieran in code about nominating Rebecca.
However viewers branded it 'the worst code ever' as Tom mumbled about his 'brother's friend' having a row, which led to him 'doing what he did in the Diary Room'.
No doubt Big Brother has a suitable punishment lined up...
Big Brother 2017 airs tonight at 10:30PM on Channel 5.