Vi tar oss an floden Garry, mitt i de vackra skotska högländerna. Rick Edwards och flodforskaren Beau Ouimette letar bevis för en av Skottlands blodigaste perioder - jakobinupproret.
Rick Edwards and Beau Ouimette embark upon an epic search through the River Ouse, which winds its way through North Yorkshire, in a bid to find evidence that it was once home to Viking life.
The River Hunters head to the River Lochy in search for evidence of the clashing Scottish clans embroiled in the 17th century civil war.
The River Hunters head to the cathedral city of Canterbury in Kent, where they are granted special permission to undertake the first official search of this section of the River Stour.
The River Hunters hit the oldest town in Britain, searching the town's historic waterway for evidence of the Siege of Colchester.
The river hunters' final hunt takes the team back into Yorkshire to uncover relics at Knaresborough Castle from the brutal 14th Century clashes between the English and the Scottish.