Grey'S Anatomy 2024 Cast Members. Our rundown of who's who in the season 20 cast of 'grey's anatomy' reveals which actors are in and which have (scrubbed) out. Grey’s anatomy is returning for season 21 tonight (september 26) and the show has a new time slot… along with some new cast members!

Along with some new cast members! Grey’s anatomy is returning for season 21 tonight (september 26) and the show has a new time slot.