Mr. Silverman disappeared this summer, about the same time that Ms. Lizzie went missing. But in the next couple of months, we caught a few glimpses of him several houses away. Not too far in human terms, but a good cat distance from his former home. Then one morning we lured him back home, put him in my bathroom with a dish of food, and closed the door. He made himself at home for a short while before demanding "out".