Anton Murphy and Jay Mckray were told on Monday that they had been put up for eviction by their fellow housemates.
The pair were then asked to pack all their belongings and go to the Diary Room, upon which they were sent into a secret crypt where they must "live like ghosts until further notice".
They were informed that, as a reward for going to the crypt, they will have the power to change this week's nominations.
The remaining housemates were told that Anton and Jay had "left the Big Brother house". They were then played a fake goodbye message from the pair claiming that they had been evicted, although the housemates remained suspicious that something else was afoot.
Anton and Jay are now living in the crypt, where they have to wear black hooded cloaks and ghoulish face paint. The pair have access to a TV screen to monitor the goings-on in the Big Brother house.
Big Brother continues tonight on Channel 5 at 10pm.
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Watch the housemates speculate on the eviction twist before Monday's announcement below: