In the series' latest twist, which was announced to viewers during last week's live eviction, one of Louise Cliffe, Alex Rose, Tom O'Connell, Jay Mckray and Aaron Allard-Morgan will leave the house ahead of tomorrow's grand final.
Big Brother's Bit on the Side was streamed into the house last night as contestants were gathered on the sofa.
Emma Willis initially tricked the housemates into believing that the eviction was imminent, before announcing that it would take place live tonight.
Big Brother's special live eviction show airs tonight from 9pm on Channel 5.
McDonalds worker Alex remains the bookies' favourite to win the reality show.
> Big Brother Final poll: Who do you want to win?
Watch the Big Brother housemates' reaction to the news below: