we had a little Siamese cat named Thai. Eventually, all us kids left home and she was left with our parents. She was probably 10 years old at the time of the disappearance. She was an indoor kitty, but one day she sprinted through the door and they couldn't catch her. They looked all over the neighborhood, but couldn't find her. She hadn't been hit by a car, at least not nearby.
A few years later, they went to a progressive dinner in the neighborhood. At the salad house, where they had never met that neighbor before, there was a little Siamese kitty that was the image of Thai. She came right up to my dad, and he said, "Hey, that's my cat! Where did you get her?" They said they found her wandering on the road, so they took her in. They happily gave her back and she lived out the rest of her life with my parents.
We had one disappear from our yard several years ago and return 4 days later. We think she got run off by something and then someone took her in. At her first opportunity, she ran back home and into my arms.
I hope Porch finds his way back home. 
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