The marriage of Meredith and Derek will take center stage on Grey's Anatomy Season 11 Episode 4.
He's resentful that she sort of forced him to stay in Seattle. She's mad that he made that decision and now is taking out his frustrations on her.
Meanwhile, Meredith is dealing with Maggie's half-sister bombshell and will spend a bulk of Thursday's new installment looking at old home videos and reading her mother's journals.
Still, even with all these personal crises taking place at home, there will still be a job to do at Grey-Sloan Memorial. And, for Meredith, that job will center on her dealing with an unusual patient.
In what way? Check out the following clip from "Only Mama Knows" to see Meredith discover an unexpected medical problem, one that leaves the doctor aghast?
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Take a few moments, meanwhile, to click around below an see where various cast members were before they settled down in Seattle: