Greys Anatomy - Season 12 Link

Season 12 of Grey's Anatomy , which premiered on September 24, 2015, is often described as the "season of rebirth". Following the death of Derek Shepherd in Season 11, the show shifted to a noticeably lighter, more "rom-com" tone, reminiscent of its earliest seasons.

: A bitter custody battle over their daughter, Sofia, ensues when Callie plans to move to New York with Penny. Greys Anatomy - Season 12

: Martin Henderson joined the cast as Dr. Nathan Riggs, whose arrival triggers a dark history for Owen Hunt involving his missing sister. Season 12 of Grey's Anatomy , which premiered

: Miranda Bailey successfully campaigns to become the hospital’s first female Chief of Surgery . : Martin Henderson joined the cast as Dr

'Grey's Anatomy' Season 12 Trailer: "Everything Has Changed"

: Jason George (Ben Warren) was promoted to a series regular. Giacomo Gianniotti (Andrew DeLuca) also became a regular mid-season.