Treasure hunter Hamilton White and friend Carl Cookson have an amazing hoard of relics - believed to have belonged to the Knights Templar. Can they prove their provenance?

The most stunning relic in Hamilton and Carl's collection - the black obsidian chalice - is examined. The pair then head to Portugal to hunt for clues about the chalice.

A look at the most dramatic object in Hamilton and Carl's collection: the Knights Templar sword, which they believe might have been used at the Battle of Acre.

A look at what is arguably the most intriguing item in Carl and Hamilton's collection: the 15th-century reliquary casket. Season finale.