Paul explores the river Annan in Dumfries and Galloway, following it from where it rises above the Devil's Beef Tub all the way to the Solway Firth. On the way he samples some dubious-smelling 'healthy' spa water, hears disturbing evidence that Robert the Bruce may have been an Essex boy and discovers the explosive devil's porridge before following in the footsteps of Robert Burns by taking a dunk in the briny close to where the river meets the sea.

This Grand Tour follows the River Teviot through Teviotdale, once the haunt of notorious border reivers. In the town of Hawick, Paul joins the annual Common Riding - an event that recalls the border wars with England. In Jedburgh, close to the ruined medieval abbey, Paul is reminded of a crazy night flight by Nazi deputy leader Rudolf Hess.

Paul then joins a paranormal researcher in an attempt to contact ghosts in Jedburgh's old jail before heading to the river's confluence with the Tweed - a location for a once-magnificent Scottish castle, and where a king went off with a bang.