KNIVES OF THE AVENGER (1966)
MARIO BAVA
Plot
After the apparent death of her husband, King Arald, Karin takes her son Moki to live as peasants in hiding from Hagen, Arald's enemy. A mysterious knife-throwing Viking stranger, Rurik, begins acting as Karin's guardian. Eventually, of course, leading to a brutal showdown with bad man Hagen.