Sergeant Preston of the Yukon

 
Series aired: 1955 - 1958
Video from Internet Archive
 
Primetime TV  
 

The Limping King

Season 2, Episode 1
September 13, 1956
 
Yukon King's "lame dog" trick helps Sergeant Preston get close enough to reason with Tom Elders, a gentle veterinarian who turned into a rifle-brandishing hermit after apparently being swindled out of his life's savings of $9,000.  
Sergeant Preston of the Yukon
Available on DVD