BBC news correspondent Frank Gardner sets out to find out whether there is any truth in his late mother's claim that her side of the family arrived in Britain with the Normans. Along the way, he traces his ancestry back to his 10-time great-grandfather Sir Michael Stanhope - a knight of the Tudor court, who was accused of treason. But the journey does not end there, as he gets much closer to his mother's suspicions than he could ever have imagined.