April tells Catherine Avery (Debbie Allen) that she's glad Catherine is in town, and asks if she's going to put a halt to the battle going on between Dr. Webber and Dr. Bailey and Dr. Minnick. Catherine says it's not her business, and tells April to keep her mind on her work, not Catherine and Richard's marriage. Watch this sneak peek from Season 13, Episode 12, 'None of Your Business,' and don't miss Grey's Anatomy THURSDAYS 8|7c on ABC.