One Ace Too Many Bonanza : Season 13 Episode 26

In his second attempt to cash in on Ben's good name, crooked lookalike Bradley Meredith learns that the Cartwrights are in Carson City and, posing as Ben, pretends that he is seriously ill and begins to liquidate the Ponderosa's assets. The Cartwrights come just in time to foil Meredith's plans.