It's Vikings o'clock in this episode, with saga legends like Olaf the White, Ivar the Boneless and the Sons of Ragnar swarming across Britain. The Great Heathen Army of the 860s-70s has its mind on conquest and the action is ceaseless across Ireland, England and Scotland. Battles are fought, kings are slain, kingdoms fall and everything is in flux. Constantine has his own particular strategy but will it pay off?
After Kenneth MacAlpin started a new, Scottish dynasty in wake of a Pictish defeat to the Vikings, it was left to his brother, Donald I, to carry on where he left off. Donald seems largely to have done this but sadly the annals of history have not found an awful lot to say about him but nevertheless a few key questions do arise. Who was his mother? What's going on in Dalriata? And, perhaps most pressingly, what's happened to his trousers?