'Real Housewives Of Orange County' Season 10 Finale Sneak Peek: Shannon Beador And Vicki Gunvalson Face Off Over 'Fake Cancer,' David's Affair [Video]

The Real Housewives of Orange County's 10th season finale airs next Monday, and on October 5, following the series' latest episode, a sneak peek at the upcoming episode was released by Bravo TV. In the clip, the cast of The Real Housewives of Orange County, including Tamra Barney, Vicki Gunvalson, and Shannon Beador, are seen at what appears to be a White Party.

"We have been Brooks' biggest supporters," Beador tells Gunvalson in The Real Housewives of Orange County preview clip.

At the 10th season of The Real Housewives of Orange County has continued, each cast member has weighed in on the possibility of Gunvalson's then-boyfriend, Brooks Ayers, faking his cancer diagnosis, and all the while, Gunvalson has asked those close to her to be supportive. However, Beador, Dubrow, and Barney have all spoke out about the issue, and encouraged Gunvalson to get more information. Meanwhile, Meghan King Edmonds, who is the newest cast member of The Real Housewives of Orange County, accused Ayers of lying about his diagnosis, and forging his medical records.

During an episode of The Real Housewives of Orange County last month, Ayers was seen presenting Gunvalson and Barney with proof of his stage 3 Non-Hodgkin's lymphoma diagnosis in hopes of silencing the rumors. However, the documents, which included typos and jumbled words, only further added to the speculation.

In response to Beador's comment to Gunvalson, a woman, who was standing next to Gunvalson's brother, stepped in, and said, "She didn't ask you to see the records when you thought that your husband was cheating on you."

As her co-stars have been focused on Ayers' possibly fake cancer on The Real Housewives of Orange County, Beador and her husband, David, were dealing with the fallout from his eight-month affair with another woman. Throughout The Real Housewives of Orange County Season 10, the Beadors have been seen in therapy, and last night, during their one-on-one special with Andy Cohen on Watch What Happens Live, the pair spoke of their marriage, and David's relationship with the other woman, candidly.

"How dare you! I have been nothing but a friend to you," Beador fires back at Gunvalson.

"Really? You haven't returned any phone calls in three weeks!" Gunvalson tells Beador.

"Because you have dragged me into a story, Vicki, that doesn't make any sense," Beador replies, seemingly in a nod to Ayers' cancer story.

The Real Housewives of Orange County Season 10 has been focused on Ayers' cancer storyline for the last several weeks, and as the season progresses, new information continues to arise. Also seen in the sneak peek of The Real Housewives of Orange County finale was a comment made by Barney, which suggested the facility Ayers claimed to have gotten a scan done didn't actually offer that service.

Although Ayers has been accused of faking cancer for weeks on The Real Housewives of Orange County, he continues to tweet about his illness, and speak about it in the press, proclaiming his cancer is real, and insisting he continues to receive treatment.

In August, The Real Housewives of Orange County couple Gunvalson and Ayers announced they were parting ways after four years of dating.

For more of Shannon Beador and Vicki Gunvalson, tune into The Real Housewives of Orange County's Season 10 finale on Monday, October 12, at 9 p.m. on Bravo, and check out a sneak peek at the new episode below.

[Photo via Facebook]