Hitch knew a good deal when they saw one. They saw the party all the rescue cats were having indoors and found a way into the building through a gap in the catio, and made themself at home. We didn't catch on to our interloper for at least a week, because Hitch would hide whenever we came in the room. Eventually we noticed and captured them, but rather than turn them back onto the street, we set them up in the rescue. After all, Hitch had worked hard to get into the club!