Where is season 4 on IMDb? What a show, though, really. You can't get a better set of actors here too. Riveting, at the edge of my seat with all sorts of Deja Vu coming in from History's absolute fabulous historical renditions of Ragnar Lothbrook. I almost want to have another kid so I can name them Ragnar! Ha! Great show! Can't wait for season 5 to come out this Fall.