it was my turn to study his face . i licked my lips ; i did n't have a good answer , because she was right . there was a soft click and the door opened , smooth as butter . `` well , it all depends on what you mean by 'any sign , ' i guess , '' bob said cautiously . i stepped away , even though it was the last thing i wanted to do . about as fair as making sure you feed your dog at least once a day . anything ... '' the word hangs between us . 