GREY'S ANATOMY
ABC, 8:00 p.m. ET
SEASON PREMIERE: The night of Shonda Rhimes returns with all-new episodes this evening. Season 12 of her flagship series, Grey’s Anatomy, begins the celebration, followed at 9 p.m. ET by Season 5 of Scandal and at 10 ET by Season 2 of How to Get Away with Murder. But this season of Grey’s is unlike any other, because Meredith (Ellen Pompeo) is now a widow…