Picture from day 49
Two more housemates of the remaining housemates will leave the house by the backdoor after Charlotte or Isabelle are evicted.
Either Charlotte or Isabelle - who were nominated by Tom and Hannah - will be evicted through the back door today, to be revealed in tomorrow night's episode and interviewed on BOTS.
Some Ex-BB housemates will re-enter the Big Brother house tomorrow as part of a task, to be shown in Wednesday night's episode.
Then another two housemates will be evicted through the back door, to be revealed in Thursday night's episode and interviewed on BOTS.
UPDATE: the double-backdoor eviction will be decided by who has the fewest votes in the vote to win, not the ex-housemates.
The Big Brother 2017 final takes place live on Friday from 9pm on Channel 5.