Lawman - Season 1 - Eps 3: The Joker
Dan and Johnny try to capture a prisoner, who tells Johnny that he is his father. Dan is shocked when Johnny turns in his badge, saying he has bad blood and won't make a good lawman. At the end, Dan and Johnny have a gunfight with the prisoner, and Johnny takes back his job.
About Lawman

Title: Lawman
First Air Date: 1958-10-05
Last Air Date: 1962-06-24
Status: Ended
Rating: 5.4/10 (from 9 votes)
Language: EN
Seasons: 4
Total Episodes: 156
Network: ABC
Genres: Western
Production Companies: Unknown
Synopsis
Lawman is an American western television series originally telecast on ABC from 1958 to 1962 starring John Russell as Marshal Dan Troop and featuring Peter Brown as Deputy Marshal Johnny McKay. The series was set in Laramie, Wyoming during 1879 and the 1880s. Warner Bros. already had several western series on the air at the time, having launched Cheyenne with Clint Walker as early as 1955. The studio continued the trend in 1957 with the additions of Maverick with James Garner and Jack Kelly, Colt .45 with Wayde Preston, and Sugarfoot with Will Hutchins. One year later, Warner Bros. added Lawman and Bronco with Ty Hardin. Prior to the beginning of production, Russell and Brown and producer Jules Schermer made a pact to maintain the quality of the series so that it would not be seen as "just another western." At the start of season two, Russell and Brown were joined by Peggie Castle as Lily Merrill, the owner of the Birdcage Saloon, and a love interest for Dan.
Cast

John Russell
Marshal Dan Troop

Peter Brown
Deputy Johnny McKay

Peggie Castle
Lily Merrill