According to reports, the extra eviction will take place next Wednesday, just two days before the final where one of the contestants will walk away with the £100,000 cash prize.
A "show insider" told The Sun: "You know we love to mix things up. There are still plenty of twists and turns."
Last year, a similar bonus eviction took place, with contestant Stuart "chicken" Wilson being smuggled out.
Meanwhile, on tonight's show viewers will find out if Kinga has passed her secret mission, set by 'Big Brother' producers just before she entered the house as a replacement for Orlaith on Sunday.
She has been told that if one or more housemates do not nominate her she will be exempt from nominations and guarantee herself a place in the final week.
She appears to have won over Derek, after offering him cigarettes and fawning over him, but her standing with the other housemates is less certain.
She snubbed Eugene on first entering the house and on last night's show, in scenes recorded on Sunday, viewers saw the 20-year-old market researcher initiate a game of truth or dare, resulting in a pool orgy involving Craig, Anthony and Makosi.
However, Kinga ended up drinking too much, refused to go to bed, prompting Makosi to say: "The boys are embarrassed for you".
By 3am, in scenes not screened last night, Kinga was left muttering drunkenly on her own before attempting to get into bed with an unimpressed and sleepy Craig, where she promptly broke wind.
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