That's the "YOU WERE NOT AT WORK WHEN I CALLED THERE AT 2:30AM AND THE SECURITY GUARD SAID YOU LEFT AT 7:00PM!!!!" look.
I experienced that look a few times many moons ago.
Reminds of those telenovela scenes where the poor guy denies having a mistress and the wife goes crazy throwing the incriminating photos at him.
If you get caught, be sure your wife doesn’t catch you in a lie.