The big day has arrived for Sergeant Merton and Jenny. The day of their wedding. But as it is almost a tradition for police weddings in Aidensfield something puts a spoke in their wheel. A masked robber has assaulted an armoured car and gotten away with thousands of pounds in old, used notes. The modus operandi suggests that the robber is Ronnie "The Dogman" Brown and Merton's old friend DS Kenny Parker is in charge of the investigation. Not surprisingly Brown has made himself scarce when the police come to pick him up. Meanwhile everybody else is occupied with the preparations for the wedding. Vernon Scripps promises to get a freshly caught wild salmon. He counts on catching it himself and to an (instant) expert on fly fishing that should not be any problem, should it? Despite her pregnancy Gina still has second thoughts about marrying Phil Bellamy.