On his way out West, Edge joins up with a Scottish couple, Angus and Ruth Ross, bound on a strange mission. The Rosses are traveling in an old Conestoga wagon loaded with four costly and ornate caskets. They have come a long way in search of four unmarked graves…Edge and the Rosses stumble onto their first clue, when they are greeted by nervous, silent townspeople in a small Kansas town. Their silence soon turns into angry violence and Edge and the Rosses are run out of town with a grim warning – give up the search for the graves … or else!But they continue to search. And Edge plays his ironic, deadly part in the final scenario of death as the mystery falls away. And the murderous truth emerges.