he could see kaley in a slinky black dress with no back at all , slits up past her thighs , very low v-neck , drop-dead gorgeous , thirteen years younger than vicki , a helluva lot fitter , out there on the dance floor with ray , who was not a bad dancer himself , bobbing and jerking to the motown rhythms of the drifters , while everybody watched and whispered , `` who 's that ? ''