Yogi said "It ain't over 'til its over"

The mice reminded me of this it ain't over til its over bit, in fact, I swear I heard one of them say this when they thought I was not listening.
At any rate, mice in the attic again, AND, to make matters even worse, one has found, or has made a hole from the attic into the house.   Without even an "eek", it was observed running down the hallway toward the kitchen.  The broom brigade was brought out, but mus was nowhere to be found. It must have gone into the closet, and we won't even go in there.
Well, the next morning it was in the trap.
So, now glue traps in the house at key locations so we can narrow down where it might have gotten from the attic into the house---presuming there is another one.
Not able to let the question of where it got in, we tore the books out of the bookcase  looking for a gnawhole, but found none. Why the bookcase?  well, we heard scratching noise in the wall behind the bookcase and so presumed it was desparate and was chewing through to the interior of the house.  No evidence of an entry point anywhere.
This game has gone from irritating to interesting, so we are now waiting for mus musculus to make the next move.
Next, we call in the fat lady to sing.