Grey's Anatomy bid farewell to Kelly McCreary's Maggie Pierce after nine seasons, but she will return as a guest star in the Season 19 finale alongside Ellen Pompeo's Meredith Grey. McCreary's decision to leave was influenced by her character's growth and her belief that it was time for Maggie to move on. She expressed openness to returning in the future. In her final arc, Maggie had a heartfelt goodbye with her father before accepting a new job in Chicago. McCreary confirmed her return for the finale and expressed excitement about it.