VIDEO: Sneak Peek - Kathy Bates Guests on Next MIKE & MOLLY

On the next episode of CBS's MIKE AND MOLLY titled 'Three Girls and An Um', Molly meets the best buddy of her dreams when Peggy's childhood friend comes to town, but Peggy is not keen on sharing.

The episode airs Monday, March 17 (9:00-9:30 PM, ET/PT) on the CBS Television Network. Kathy Bates guest stars as Kay McKinnon, Peggy's childhood friend. Get a sneak peek below!

MIKE & MOLLY stars Billy Gardell and Melissa McCarthy in a comedy about a working-class Chicago couple who had almost given up on love…and then found each other.  Officer Mike Biggs is a good-hearted cop who works the beat with his fast-talking, wise guy partner, Officer Carl McMillan.  When he least expected it, Mike met Molly Flynn, an instantly likeable fourth grade teacher with whom he's immediately smitten.  Molly lives with her sexy older sister, Victoria, and their flirtatious, wine-loving mother, Joyce.  Mike and Carl frequent a diner where they've become friends with Senegalese waiter, Samuel.  Mike's other friend is Harry, his Overeater's Anonymous partner who he met at a Cubs game.  Often, Mike and Molly's relationship is complicated by interference from his mom, Peggy, and Carl's Grandma and Joyce's fiancé, Vince, who offer unsolicited advice on love.  However, now that they've found each other and are married, Mike and Molly look forward to the next chapter of their lives together.