A man with a grudge against the late Little Joe seeks revenge on the Cartwrights and attempts to take over the Ponderosa.

Dr. John Beck, recently married, decides to take his wife, Cathy, spelunking in Carlsbad Cavern. While there, Dr. Beck, who specializes in bats, is bitten by a fruit bat. He…

The Pony Express opens up an office in Virginia City. Despite being an investor, Ben objects to Joe signing up as a rider. Adding to his concerns, the Paiute Indians…