A friend works at a police station. One day they went out on a call and brought someone back to the station.

During mediation, they learned:

The wife of the man who did the beating had been having an affair with the man's own younger brother, and they were caught in the act.

The husband beat his own brother half to death...

While at the police station, the wife became increasingly agitated as she spoke...

Finally she cursed and shouted: "Since you could even do something like that with your own brother, does that mean you'd beat all the neighbors to death too..."

Apparently at the time, it took three police officers to barely restrain her husband.