We will meet another shepherd's sister Gray's Anatomy!
The show is an actor Amy Acker such as Derek Shepard (Patrick DempseyThe mysterious fourth sister, Kathleen, Well! News. Previously, we met Liz (Neve Campbell) and Nancy (Embet Davitzand, of course, Amelia Shepard (Catherine Scorsone).
Kathleen is also a doctor, as her brothers and sisters, and she specializes in psychiatry.
She will make her debut in the upcoming episode, and nothing else is known right now.
Stay tuned when we learn more about it Gray's Anatomy twist!