Jill kept quiet, too, and tried to get her thoughts straight.  Suddenly she realized that the cab was heading down the final traffic leg toward the apartment house where she lived - and she realized just as quickly that home was the last place for her to go, it being the first place they would look once they figured out how Smith had escaped and who had helped him.  She did not kid herself that she had covered her tracks.  While she knew nothing of police methods, she supposed that she must have left fingerprints in Smith's room, not to mention the people who had seen them walk out.  It was even possible (so she had heard) for a technician to read the tape in this cab's pilot and tell exactly what trips it had made that day and where and when.