history: Someone  keyed my new car yesterday at work.  I don't know who that was and it is better for them it keeps that way, or I will make them pay for it and denounce them to the police. Someone keyed my new car yesterday at work.
current: Oh no! Did you find out who?
next: No,  I don't know who that was and it is better for them it keeps that way, or I will make them pay for it and denounce them to the police.