As filming for Season 10 is already underway, we know that the season will be short two main castmembers, Mia Thornton and Karen Huger. Mia, of her own volition. Karen, due to her prison sentence. As The Real Housewives of Potomac charters a new frontier without the Grande Dame, the energy will change as the stories begin to evolve around other main characters. With Karen's DUI being a central storyline of Season 9, it opens up The Real Housewives of Potomac to close that chapter of its history.