That was episode #416, called Forever, original air date September 12, 1972 . Written and directed by Michael Landon but he originally wrote the script for the character Hoss. Actor Dan Blocker died in the spring of 1972 before season 14 began filming. Landon took on the role instead.
No, Candace Bergen was not on a Bonanza episode.
no
Below is a link to the full cast and crew of the Bonanza episode The infernal Machine.
Imdb has photos for each episode of the series.
no
No, Candace Bergen was not on a Bonanza episode.
no
Below is a link to the full cast and crew of the Bonanza episode The infernal Machine.
Imdb has photos for each episode of the series.
no
No, Barbara Eden wasn't on any episode of Bonanza
Desperate Passage was the name of the episode
Blessed Are They, Season 3 Episode 30.
Actor Pernell Roberts of Bonanza is dead. I believe he was not married at the time of his death in 2010.
I could not find his name for that episode.
Franklin did do one episode of Bonanza, First Love, aired 1972. But she played the wife of a school teacher as an adult.
Episode #232, Season 7, The Fighters, original air date: April 24, 1966.