Bonanza - Season 13 - Eps 18: Frenzy
Ben helps shepherd a young family, the Kosovos (Nick; his wife, Anna; and his son, Sandor), who had recently immigrated from Serbia. Nick soon finds he can't handle the pressure needed to become successful in America and, one evening while Ben is visiting, his mind snaps. He goes on a rampage, trapping Ben (who becomes injured) and a terrified Anna and Sandor inside their home. Ben must do all he can to keep Nick at bay and try to reason with the mentally ill rancher.
About Bonanza

Title: Bonanza
First Air Date: 1959-09-12
Last Air Date: 1973-01-16
Status: Ended
Rating: 7.516/10 (from 441 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