The Western Way - S2.E18

Frank Graham's daughter has died, and finds out that he has a grandson named, Frank Scott. Frank Graham decides to make Frank Scott his heir. This disappoints his nephew, Paul Greeley, who was planning on inheriting the estate. Paul is in debt to gambler, Duke Ferris. Graham askes Gene and Pat to meet the stage bearing his grandson, arriving in time to drive away Duke's henchmen, who arrived to murder Frank so Paul could be a heir.