Bonanza - Season 4 - Eps 16: Song in the Dark
Adam's guitar-strumming friend, ranch hand Danny Morgan, is arrested on suspicion of murdering and robbing the Widow Baker. Someone had reported hearing Danny singing outside her place at the time of the murder. More, importantly, Morgan has bad scratches on his arm, and the widow was found with human skin under her fingernails. Adam is thoroughly convinced that Danny couldn't have done it; the two became friends after Danny saved Adam's life a few years ago.
About Bonanza

Title: Bonanza
First Air Date: 1959-09-12
Last Air Date: 1973-01-16
Status: Ended
Rating: 7.518/10 (from 443 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