Frankie Hollywood at 2015-05-26 10:39:25:
"inspire some interesting scene-writing challenges"
You're getting ready to eat dinner with your family and in-laws when you see on the news that the person you're having an affair with (in another city) has been murdered. Your significant other has always had a suspicion of the affair and knows you were in the other city at the time of the murder.
Written from either the adulterer's POV or the significant other's POV.