Yesterday, all twelve celebrities were united in main camp for the first time after the Jailhouse twist came to an end.
The development meant viewers regained the power to determine who would face the food challenge during Saturday's episode.
Eleven of the campmates were eligible for 'Crevice of Cruelty', with late arrival Cliff Parisi ruled out on medical grounds.
The public had to choose two to search a series of underground tunnels and chambers for vital stars, as they slowly filled with water.
As always, the unlucky pair will also encounter jungle creatures, including spiders, snakes and baby crocodiles.
"Two celebrities are about to get down and dirty in an underground cavern where a world of woes await," a teaser video said.
"The stars are in reach, but who can keep their head while they crawl through the Crevice of Cruelty?"
Ant and Dec visited camp at the end of the show to announce the results, telling Ian and Jacqueline it 'might be them'.
The hosts then confirmed they would both take part - and the news instantly reduced Jacqueline to tears, with other celebs gathering to comfort her.
Facing the prospect of her fourth terrifying Trial, she wailed: "I don't wanna do any more, man."
You can watch a first look at the pair taking on the trial above and see it play out in full in tonight's episode (November 24) on ITV at 9PM.
Yesterday, the entire line-up paid one last visit to Ol' Dingo Town to face a group Trial, 'Pest Office'.
The outlaws were locked in a jail cell as creepy crawlies rained down on them, while the celebs from main camp held live critters in their mouths and ate cow parts.
They eventually won twelve out of twelve meals on offer, the first full house since day three.
I'm A Celebrity… Get Me Out Of Here! continues every night on ITV at 9.00pm.
ITV2 spin-off Extra Camp also airs nightly straight after the main show.
You can catch up on the latest instalments via the ITV Hub.