“Out for Blood” – Due to a blood shortage, Grey Sloan Memorial is setting up a voluntary donation center. Meanwhile, Nick asks Meredith for help with his patient and Winston is hung up on his relationship with his brother, in the first hour of the season finale of “Grey’s Anatomy,” THURSDAY, MAY 26 (8:00-9:00 p.m. EDT), on ABC. Watch episodes on demand and on Hulu the day following their premieres.

Guest starring is Kate Burton as Ellis Grey, Cedric Sanders as Simon Clark, Bianca A. Santos as Kristen Clark, Kristen Lehman as Cora and Sandy Martin as Sally.