Who is Lexie Grey in Grey's Anatomy?

Little Grey, the photographic memory · The Next Generations

Lexie Grey (Little Grey, the photographic memory) is a character in Grey's Anatomy, part of The Next Generations. Lexie Grey arrives as an intern with a photographic memory and the world's most awkward icebreaker: she is Meredith's half-sister, raised in the sunny parallel family their father built after leaving. Earnest where Meredith is guarded, Lexie wins over the hospital, the audience and — across an age gap and several detours — Mark Sloan, in the show's most quietly tragic love story. 'Little Grey' becomes a real surgeon and a real sister, which is exactly why the woods after the plane take so much with her.

When does Lexie Grey first appear?

Lexie Grey first appears in Season 4, Episode 1 (“A Change Is Gonna Come”) of Grey's Anatomy (2005–, ABC).

Who is Lexie Grey connected to?

Relationships already established when Lexie Grey first appears — nothing from later episodes.

• Meredith Grey — The sister from the sunny house

Watching right now? Open Lexie Grey in the interactive map, set the episode you've reached, and see every relationship and bio update you already know — spoiler-free.