Finally, there was one last precaution, Jessie’s favorite. She actually lived on the thirteenth floor, even though, like in many buildings, it supposedly didn’t exist. There was no button for it on the elevator. The service elevator could get to the floor but required a security guard to accompany anyone using it. To access the floor under normal circumstances, one had to get off on level twelve or fourteen and open a nondescript door off the main hallway marked “service panel entry.”

