The Rifleman - Season 1 - Eps 20: The Deadeye Kid
McCain befriends Donnel O'Mahoney, a tough kid from Brooklyn, and arranges with two men for the young man to continue his travels on their wagon, but then one of them is murdered and the other accuses the boy of having done it.
About The Rifleman

Title: The Rifleman
First Air Date: 1958-09-30
Last Air Date: 1963-04-08
Status: Ended
Rating: 7/10 (from 46 votes)
Language: EN
Seasons: 5
Total Episodes: 168
Network: ABC
Genres: Action & Adventure, Western, Family
Production Companies: Four Stars Productions
Synopsis
The Rifleman is an American Western television program starring Chuck Connors as rancher Lucas McCain and Johnny Crawford as his son, Mark McCain. It was set in the 1880s in the town of North Fork, New Mexico Territory. The show was filmed in black-and-white, half-hour episodes. "The Rifleman" aired on ABC from September 30, 1958 to April 8, 1963 as a production of Four Star Television. It was one of the first prime time series to have a widowed parent raise a child.
Cast

Chuck Connors
Lucas McCain

Johnny Crawford
Mark McCain

Paul Fix
Micah Torrance