It's a fairly complex plot but there are people who imagine there's always a new way to steal, or a new way to murder, and get away with it.
This one will eventually have a different outcome.
The shooter was not at the husbands house at all. The shooter and the wife where at the shooters house and then went for a ride in the wifes truck and returned to the shooters house. The husband the made an ass of himself and got shot and killed for his stupidity. The husband was not a victim he was a dumbass.