A small reddish-orange bead unearthed in a Viking grave in Derbyshire reveals that the Scandinavian sailors were far more than brutal warriors who loved raiding British monasteries. Author and historian Guy Walters talks to bioarchaeologist Dr Cat Jarman, who reveals how the bead helped her unravel how the Vikings engaged with the East just as much as the West, sailing across Russia by river boat and even travelling to Baghdad.