Spoiler warning: This article contains details about Big Brother Australia which some readers may wish to avoid.
Day 12 started with Angela revealing to Marissa that she has been hoarding tea bags - in her bra. "Tea is precious," she told BB, also admitting to having accidentally dropped one in the toilet but retrieving it to reuse.
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Meanwhile, BB provided Ian with a gift of some pet fish in order to help him cope with the loss of his huntsman spider Patricia a few days earlier.
Having been exposed as a snake the night before when Danni was evicted, Kieran attempted to make amends with Garth, who assured him that they were "cool".
"I didn't think I'd get upset by things like this," Garth later confessed in the diary room. "I actually like Kieran, but as a player you just can't trust him."
The housemates gathered in the garden to learn details of the latest shopping task. Balls would be released down a ramp at any time day or night for the following 24 hours and the housemate named on the big screen had to successfully catch the ball in order to win an additional $10 for the shopping budget.
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The group initially started well but as time - and the night - wore on, misses were becoming more common than catches.
Garth started talking strategy with Xavier and Ian, with Kieran's actions coming into the spotlight. "He made a huge move but it's come crashing down," he said. "He's ended up shooting himself in the foot."
Xavier described Kieran as "a dead man walking" but said that it would be a mistake to take him out now, instead suggesting that they should target the "very dangerous" Angela after her back-to-back challenge wins.
After the 24-hour ball task was up, BB revealed that the group had earned $190 out of a possible $340 towards the shopping budget, with designated shoppers Garth and Zoe immediately getting to work on the shopping list.
Zoe decided that the house would be given green tea and not Angela's preferred choice of English breakfast tea, leading to an inevitable reaction.
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"I'm furious," Angela told BB. "I'm very, very angry because I think that was very spiteful." She went on to tell Marissa that they had to look to split up the group, declaring: "Get out, you don't mess with my tea."
For the latest nominations challenge, each of the housemates was hooked up to a spindle of rope and was required to unfurl the rope around their own bodies before retying the rope around a second spindle.
Daniel built up an early lead, while Angela crashed out early, claiming that she was on the verge of vomiting through dizziness. Working at speed, Ian stealthily overtook Daniel and eventually moved clear to claim his first challenge win of the season.
"I've finally won a challenge, I'm so proud of myself," he told BB. "I need to think what's in my best interest and my mates' best interests. That's my gameplan. I don't want to lose any more of my mates."
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Going on to name his nominees, he explained: "Marissa, because she's a huge physical and mental threat. I want to nominate Angie, because even though she's kept me safe every challenge she's won and this feels like a betrayal, her willpower speaks for itself. The last one I think will have to be Chad - I haven't made as close a personal connection to Chad as the other housemates."
When Ian's choices were announced to the group, he had to take a moment to himself after getting emotional. Kieran was overjoyed to have avoided the chopping block, while for Garth the choice of who to evict was clear.
"Angela is a threat to my game because she's a challenge beast and she knows how to play the game," he said. "She needs to go because I need to sleep. At the moment I'm sleeping with one eye open."
Angela was fully aware of the target on her back but tried to convince the girls that it was time for one of the boys to go. "My plan is to just try and confuse the girls and open their eyes. Chad needs to go," she revealed. "If we continue to get rid of girls this is going to be a boys' club. I hope the girls are on board. If I have Kieran and Marissa in my corner I think I could be fine."
Despite a valiant attempt to save her skin, Angela's efforts were in vain and she was evicted with eight votes to Chad's four and Marissa's two.
"I've had a great time," she conceded, thanking and hugging everyone before making her exit.
However, there was to be one final twist - as Angela made her way down the exit corridor, Big Brother had an announcement.
"Angela, one moment please," he said. "Your game is not quite at an end. Big Brother can reveal that whilst you received the most votes tonight, you have not been voted out of the Big Brother house."
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As Angela fell to the floor in disbelief, BB instructed her to access a secret room at the end of the corridor.
Once there, she was greeted by 'Big Brother's Bunker' - a control room featuring video feeds from every camera in the house, as well as private living quarters and... a pot of tea.
Telling her that the bunker would be her new home for the next few days, BB advised her: "Get comfortable. And begin plotting your revenge."
Big Brother Australia continues Sunday night on Seven with the 'Big Brother Takeover'.
> Recap: Big Brother Australia episode five - Who's The Snake?
> Recap: Big Brother Australia episode four - Shot Fired
> Recap: Big Brother Australia episode three - Cage in a Cage
> Recap: Big Brother Australia episode two - Breaking The Ice
> Recap: Big Brother Australia episode one - Premiere
> Pictures, Video: Meet the 20 Big Brother Australia housemates