EXCLUSIVE: Vicki Gunvalson Admits to a 'Couple of Lies' on 'The Real Housewives of Orange County' Season 10 Re

Bravo

Heather Dubrow and Shannon Beador confront their co-star about fabricating stories.

The Real Housewives of Orange County's 10th season might be over, but the drama is just getting started -- and ETonline has your exclusive first look at the show's three-part reunion.

Part one's cold open teases a storm of accusations, attacks and tears -- all from, or targeted at, Vicki Gunvalson. The longest-serving Housewife stood by her now ex-boyfriend, Brooks Ayers, all season long, despite her co-stars constantly questioning whether he had cancer.

WATCH: Housewives Happy Hour With Orange County Star Tamra Judge

"He's not sick," Heather Dubrow exclaims at Gunvalson. "We're all agreeing on this. The only question is, when did you find out?" 

Gunvalson doesn't answer, but in a separate scene she is seen mumbling to herself, "I didn't lie about anything. Well, maybe a couple lies," though it's not clear what she's talking about. Then, host Andy Cohen confronts her about fabricating stories. Again, it's unclear what stories he's talking about. But the ladies are curious, with Dubrow reacting in shock. 

"I've known he was a piece of sh*t from the day you started dating him," Tamra Judge whispers to Gunvalson at one point, seemingly about Ayers. "But now's your time to say, 'He f**king lied to me.'" 

WATCH: Housewives Happy Hour With Orange County Star Meghan King Edmonds

It doesn't look like Gunvalson will be saying just that, though. She's seen screaming at Dubrow that she "doesn't have any proof that he's not faking cancer," or "proof he is faking it."

That's when the biggest bomb gets dropped: Shannon Beador says she does have proof that Ayers is faking cancer. We'll have to wait and see what that alleged proof is, though.

WATCH: Housewives Happy Hour With Orange County Star Heather Dubrow

The super tease ends with Gunvalson saying, "I didn't lie on purpose," and Beador demanding that she "fess up." 

The Real Housewives of Orange County's three-part reunion kicks off on Monday, Oct. 19, at 9 p.m. ET on Bravo. While Ayers doesn't appear alongside the ladies, he will show up to tell his side of the story in clips from a pre-taped one-on-one interview with Cohen. 

WATCH: Housewives Happy Hour With Orange County Star Shannon Beador

Before the reunion, check out what Ayers had to say to ET about Gunvalson's co-stars creating "manufactured drama" around him.