Show of the week
We have watched Norse king Ragnar Lothbrok thrillingly maraud through the Old World for three-plus seasons now. But he—and the series built around him—have been in selfimposed exile since he suffered defeat in France at the hands of his brother, Rollo. The show’s midseason premiere finds Ragnar returning to his Kattegat homeland after a multiyear absence, reuniting with his now-grown sons, who all will vie for his favor. His story will finally dovetail with King Ecbert’s as Ragnar seeks to exorcise a grudge. Wednesday, Nov. 30, at 9 p.m., History Channel
• All listings are Eastern Time.