I found the 3rd cat a few minutes after posting. I was sitting in the computer room and thought I kept hearing a box just barely move. I knew that all of that had been tossed, ever so gently, all over the room by "The assholes" (formerly known as robbers), so deep down I knew it wasn't the cat, but had to look anyway.
Of course he wasn't there, but as soon as I sat back down, I saw his glorious little black nose peaking out of the closet. So thankfully, even though our side door was wide open from 12pm until 4:45pm, all 3 stayed in the house! (and OK, neighbor, how the hell do you not notice THAT?!?!?)
We were able to narrow the time of the crime to 11-12pm. One neighbor saw the car on the street with a guy walking the street at 11am, and is PISSED that he didn't call the cops (he always does - we live on a dead end, so we ALL known when a car belongs here or not), and the OTHER neighbor saw it in our driveway probably between 11:30 and 12pm. No license plate numbers, just a red/maroon Olds sedan with front fender damage. SO the cops have that.
julia - I'm right up the street from the library in your town(I think you're in the same town as Deb), on one of the side streets by the river.