Why can't you just follow the OW home?

How did you find out the woman was married or her name or anything?

I think part of the problem is we are a bit in the dark on how you got the information you have now... if you saw him cheating and you know the woman is married.. how did you find out she was married?

There must be some clue here to help us find this person's name and get in contact with him.. its 2010 and pretty hard to hide in America these days...