Grey’s Anatomy’ EP Meg Marinis on the Season 21 finale: that breakup, Meredith's return to Seattle, the explosion — and whether Sandra Oh will return.

"Unless you saw them, I don't think we can say anyone is necessarily safe," she tells The Hollywood Reporter about the seemingly deadly final moments of season 21.

On the season finale of "Grey's Anatomy," an ordinary day at Grey Sloan takes an unexpected turn when a medical emergency unfolds in the operating room, endangering lives inside the hospital.