In 1898, Swedish immigrant Olof Ohman claimed to have found a runestone in Minnesota, left by Viking explorers more than two centuries before Columbus arrived in North America. In the documentary series ‘American Runestone’, Peter Stormare (‘The Blacklist’; ‘Prison Break’, ‘Swedish Dicks’) travels through Minnesota to discover whether it’s time for history to be rewritten. Born in the same region of Sweden as Olof Ohman, Stormare meets scholars, sceptics and sensationalists on a deeply personal and often humorous journey that leaves no stone unturned.