SCARY!
Cats are so good at sneaking out the door when they want out bad enough.
One of my kittys will stand off to the side where you can't see him when you come in the door, and try and dart out. One time he did this successfully when we had a guest come over, and we did not know it until a couple hours later Luckely he did not go too far, and we got him home by shaking the food bag