The latest Grey's Anatomy death had Us seriously in our feels - and reminded of a past story line. Warning: This post contains spoilers for the Thursday, March 19, episode of Grey's Anatomy. Couples therapist Katie (played by Samantha Marie Ware) died at the end of Thursday's episode following a battle with cancer. Ware's character recurred throughout season 22 as one of the patients of general surgeon Miranda Bailey (Chandra Wilson) and resident Lucas Adams (Niko Terho).