Bonanza - Season 1 - Eps 3: The Newcomers
John Pennington and his crew want to mine the Ponderosa land by hydraulic means. Ben is totally against this method and evicts them in short order. Hoss is given the task of telling Pennington's men to leave, but soon has a moral dilemma on his hands when he meets Pennington's beautiful sister, Emily. He soon discovers a heartbreaking secret...she's terminally ill; but their relationship soon leads to plenty of trouble for the Cartwrights.
About Bonanza

Title: Bonanza
First Air Date: 1959-09-12
Last Air Date: 1973-01-16
Status: Ended
Rating: 7.5/10 (from 440 votes)
Language: EN
Seasons: 14
Total Episodes: 431
Network: NBC
Genres: Western, Action & Adventure, Drama, Family
Production Companies: NBC, NBC Studios
Synopsis
The High-Sierra adventures of Ben Cartwright and his sons as they run and defend their ranch while helping the surrounding community.
Cast

Lorne Greene
Ben Cartwright

Michael Landon
Joe Cartwright

David Canary
Candy Canaday

Tim Matheson
Griff King

Mitch Vogel
Jamie Hunter Cartwright