Besides the general layout, some of the specific design elements were also recycled into the new set—most noticeably, the fireplace and glass-paned partion with the sliding door. In Natalie's apartment, the latter leads from the living room into the dining room; in Tracy's, it leads into her bedroom. A three-storey apartment building was used for exterior views of the building where Tracy lives. From a comparison of its fenestration with the angle out of the bedroom window (Dead of Night), it seems probable that Tracy's apartment is on the first floor.