CBB fans tonight (22 August) saw Katie lose it after discovering she was up for eviction and, more importantly, that Frankie Grande had nominated her...before calling her "unstable".
After a row with Frankie, Katie entered the Diary Room in tears and ripped the batteries out of her microphone before standing in the corner out of view.
She told Big Brother: "Can you please give me my things, because I want to get the f*** out. My battery is out, give me my sh*t."
Big Brother calmly asked Katie to take a seat in the Diary Room chair, but she replied: "Absolutely not. There's nothing to say."
Katie then demanded her fee for appearing on the show, insisting: "Just give me my money because I want to go.
"I don't want to be on camera. I'm sick to death of being made a fool out of. Just give me my f***ing money, I want to leave!"
The end credits then rolled, with viewers left wondering whether she had left the house or not.
Following tonight's show, Katie's rep has confirmed that she is still in the CBB compound by urging fans to vote for her. On both Katie's Twitter and Instagram pages, her picture has been posted along with the message: "Lines are OPEN vote to save Katie from eviction she SHOULD be a finalist!"
Although Katie appeared quite distressed in this evening's dramatic scenes, viewers were amused by her demand to Big Brother for payment.
Singer and TV star Michelle Heaton tweeted: "Oh no.. She didn't say, 'give me my money I wanna go"... Erm..Isn't that a line from Pretty Woman?"
Former TOWIE star Mario Falcone, meanwhile, tweeted a 'crying with laughter' emoji and the words: "Give me my money!"
Along with Katie, housemates facing eviction are Stephen Bear, Marnie Simpson, Samantha Fox, Ricky Norwood and Frankie.
CBB continues at 9pm on Channel 5.