Sunday, August 20, 2017, 9:00-10:30 p.m. ET.Check your local listings
Follow Endeavour in the nightmarish hunt for a serial killer.
Follow Endeavour, who while struggling with Joan Thursday’s sudden departure, is consumed by a nightmarish hunt for a serial killer. He must race against time to find the connection between a chess-playing “thinking” machine and a baffling drowning.
ENDEAVOUR SEASON 4 ON MASTERPIECE "Part One: Game" full-length episode. Premieres Sunday, August 20, 2017, 9:00 p.m. ET.Watch