Meredith (Ellen Pompeo) tells Catherine (Debbie Allen) that she'll refocus her research -- but not before asking Amelia (Caterina Scorsone) to continue it in secret. Owen (Kevin McKidd) gets an update on Teddy's (Kim Raver) health, and the interns get a new residency director. From the season 20 premiere of 'Grey's Anatomy,' episode 1, 'We've Only Just Begun.' Watch 'Grey's Anatomy' THURSDAYS 9/8c on ABC. Stream on Hulu.