Somewhere in Sonora

Bob Leadly:
[Talking about his missing son] A man was killed. Some of the men who were present seemed to think Bart was the guilty party. They found out later that he was innocent, but... Bart's gone.

John Bishop:
Hung? Where is he? What happened?

Bob Leadly:
I'm not sure, but I heard he was south - somewhere in Sonora, a bandit in the gang of Monte Black.

John Bishop:
Monte Black?

Bob Leadly:
Once a man joins that gang, he never comes out alive. It's known as the Brotherhood of Death.