Overview: Time Team reports on a prickly issue in the world of old artefacts whilst on a secret investigation into a possible Viking boat burial in Yorkshire. After metal detectorists make a major discovery of coins, silver and swords a small team of archaeologists set out to uncover the source of these remarkable objects. The programme lays bare the uneasy relationship between archaeologists and the UK's 50,000 metal detectorists, some of whom are unscrupulous when it comes to exploiting their finds. The battle lines are drawn (then pegged out, excavated and displayed) between two camps with different priorities: the archaeologists and the metal detectorists. The former want to preserve ancient relics to be studied; most of the latter do, too, although an unscrupulous few would rather make money by selling their precious finds without declaring them to the experts. The issue comes to the fore at an investigation into a possible Viking boat burial at Ainsbrook in Yorkshire.