Later additions to the residency program include Lexie Grey (Chyler Leigh), Meredith’s half-sister. Lexie Grey is killed alongside Mark Sloan in the season eight finale; Leah Murphy (Tessa Ferrer) who departs near the end of the tenth season, but returns during the thirteenth; Shane Ross (Gaius Charles), who departs alongside Yang in the tenth-season finale; Stephanie Edwards (Jerrika Hinton), who resigns during season thirteen; Jo Wilson (Camilla Luddington), a doctor who begins a romantic relationship with Karev; Andrew Deluca (Giacomo Gianniotti), the love-interest of Meredith’s half sister Maggie Pierce (Kelly McCreary), who also serves as head of cardio; and Benjamin Warren (Jason George), an anesthesiologist-turned-resident, who has to balance his wife Miranda Bailey’s new role as Chief of Surgery with his own desire to succeed. Season twelve sees the arrival of attending cardio surgeon Nathan Riggs (Martin Henderson). In season thirteen, the hospital sees a shakeup when attending sports medicine/orthopedic surgeon Eliza Minnick (Marika Dominczyk) is hired as an educational consultant wanting to revamp the residency program. She is fired following the explosion at the hospital.
Production and development
Shonda Rhimes wanted to make a show that she would enjoy watching, and thought it would be interesting to create a show about “smart women competing against one another”. When asked how she decided to develop a medical drama, Rhimes responded:
“ I was obsessed with the surgery channels. […] My sisters and I would call each other up and talk about operations we’d seen on the Discovery Channel. There’s something fascinating about the medical world—you see things you’d never imagine, like the fact that doctors talk about their boyfriends or their day while they’re cutting somebody open. So when ABC asked me to write another pilot, the [operating room] seemed like the natural setting. ”