Dec 19, 2019 at 12:00 pm
25 Celebrities You Forgot Guest Starred on 'Grey's Anatomy'
Mandy Moore
Seasons: 6 and 7
The This Is Us star played Mary Portman, who is preparing for surgery when an active shooter causes the hospital to shut down. She and her husband return six months later. She goes into a coma after the surgery, and her husband takes her off life support.
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