Lisa Rinna is on the case during this week’s episode of The Real Housewives of Beverly Hills, questioning Denise Richards about her alleged relationship with Brandi Glanville.“I’ve seen her a couple times in my life. She wanted to do a podcast and I told her I was out of town, so she asked could she come up and interview all of the cast,” the 49-year-old Wild Things star begins in Us Weekly’s exclusive sneak peek of the Wednesday, August 5, episode.