Dr. Lauren Riley Arrives to Help DeLuca Make a Diagnosis - Grey's Anatomy

DeLuca (Giacomo Gianniotti) used Meredith's name to lure Dr. Lauren Riley (guest star Shoshannah Stern), a world-class diagnostician, to Grey Sloan Memorial to help him diagnose his patient, Suzanne (guest star Sarah Rafferty). Watch 'Grey's Anatomy' THURSDAY 9|8c on ABC.

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