Lawman (1958)

S4E3 The Four

Four men arrive in Laramie, armed with rifles, and take up positions throughout the town. When one of them is suddenly shot and killed, their leader approaches Dan, revealing they are on the hunt for a seemingly innocent young man who has been spotted nearby. This boy is actually a ruthless killer they’ve been pursuing. With Johnny away, Dan quickly deputizes the three remaining men, and they set off together to track down the fugitive.