Shannon Beador may be able to prove once and for all that Brooks Ayers’ cancer diagnosis was a farce. Bravo released the first official clip for "The Real Housewives of Orange County" Season 10 reunion special, giving fans an idea of what exactly they should expect when tuning in. While there are plenty of juicy moment in the trailer, none will grab your attention more than one in particular involving Shannon Beador.

During the clip Vicki Gunvalson, Brooks' former girlfriend, is shown discussing his diagnosis. She says she can neither confirm nor deny that her ex has cancer, as she has no proof. As was reported by People magazine, Shannon, 51, quickly interjects, revealing that she has brought with her some evidence that Brooks' ailment was completely fabricated. Shannon's proof is not shown in the trailer, so as to save some of the mystery for the actual episode, but later in the clip viewers see Vicki, 53, crying while seemingly admitting her guilt.

"I didn't lie on purpose," she says.

Brooks' cancer was the subject of many episodes during Season 10 of "RHOC." Speculation began in episode 11 when Tamra Judge brought Heather Dubrow and Meghan King Edmonds along for a lunch with her psychic. During their sit down the medium claimed he was having difficulty picking up on Brooks' ailment, planting a seed of doubt in their minds. That seed grew later that evening when Tamra, 48, threw a party for Brooks at Cut Fitness, the gym she and her husband Eddie Judge co-founded. During the party Brooks shared with the ladies that he had decided to forego chemotherapy in favor of holistic treatments, which he claimed he was getting from a doctor close to Heather's husband Terry Dubrow. Throughout the season more stories and inconsistencies arose after Brooks presented seemingly falsified medical records to Tamra. 

Brooks has spoken out about the cancer controversy, claiming he is actually sick. He recently told Entertainment Tonight the show "manufactured drama" for the sake of ratings. He added that he had distanced himself from everyone involved as he didn't feel it was good for him, given his condition. Heather, 46, fired back at his claims about the show, saying there is nothing fake about any of their drama. 

Part one of the "RHOC" reunion airs Monday at 9 p.m. EDT on Bravo. Check out a preview from the show below: