Greys Anatomy - Season 12 (2027)

: Martin Henderson joined the cast as Dr. Nathan Riggs, whose arrival triggers a dark history for Owen Hunt involving his missing sister.

: Jason George (Ben Warren) was promoted to a series regular. Giacomo Gianniotti (Andrew DeLuca) also became a regular mid-season. Greys Anatomy - Season 12

: Their developing romance culminates in a wedding in the season finale, though Amelia initially has doubts and runs away before the ceremony. : Martin Henderson joined the cast as Dr

: This season marked the final regular appearance of Sara Ramirez as Callie Torres. Reception & Ratings Giacomo Gianniotti (Andrew DeLuca) also became a regular

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

: The couple's marriage collapses, leading to a divorce. However, they discover April is pregnant shortly before signing the papers.

: Meredith Grey adjusts to life as a widow, moving back into her mother's house with her "sisters," Maggie Pierce and Amelia Shepherd. A major mid-season arc involves Meredith being brutally attacked by a patient, leading to a long recovery and therapy.