After the dramatic events of the Season 18 finale, in which the hospital's residency program was cancelled, causing Bailey to resign and leaving Meredith with the decision of whether to leave Seattle or take over as the hospital's interim chief of surgery, Bailey discovers that Hunt helped several veterans with physician-assisted deaths after their incurable respiratory disease diagnoses, which is why Hunt and Teddy fled. In this new season of Grey's Anatomy, Ellen Pompeo reprises her role as the series' title heroine. The rest of the cast includes Chandra Wilson, Kevin McKidd, Kim Raver, Scott Speedman, Kate Walsh, Adelaide Kane, Niko Terho, Harry Shum Jr., Alexis Floyd, and Midori Francis, among others. For this season, Krista Vernoff and her production firm Trip the Light Productions make a comeback as executive producers and showrunners. The show is also co-produced by ABC Signature and Shondaland.