Oh gosh, i'm sorry to hear this. :( this happend to us like 2 years ago. We were looking everywhere. I started going house to house asking people if they saw her. And it turns out one of my neighbors had taken her in overnight because it was like in January. I had her vet's id tag on her, but after that i put our home address on her tag, and got her micro-chipped.
I'm sure your kitty will find her way back home. Remember the movie homeward bound?? They found their way home! :)
what about the part where the dogs were talking and stuff? if they were so smart they would have gotten on the horn and called a cab.