"Mia Ziemann is here!" the dog announced heartily to the empty air. The living room had the sanitary neatness of some strange old-fashioned hotel: potted palms, a mahogany media cabinet, tall brass floor lamps, a glass-topped teak table with spotless untouched glassware and hermetic jars of mixed nuts. A pair of large rats with control collars were eating lab chow from a bowl on the table.