Such a joy [insert eye roll here]

So, we're (mostly) moved in and settled in our new house (our first), and, today, we get a visit from carpet fitters.  Okay, no problem there--until they leave the front door open--unbeknownst to me--for a while.  Now I cannot find one of our cats, though diva kitty is safe and sound upstairs.  The fitters keep giving me these sheepish looks, asking frequently if I've found the lost one.  Just when the stress of the move was starting to wear off...