Woman Vanishes Inside New York City Skyscraper

She clocked in for her cleaning shift inside a high security NYC office building near Ground Zero, and more than 48 hours later, and after police claim to have combed the building, she still hasn't been found :

Eridania Rodriguez, 46, punched in for work at No 2 Rector Street at 5pm local time. She put on her blue uniform, chatted with other after-hours workers and was last seen on security cameras at around 7pm. Then, she disappeared.

Her cleaning trolley was found abandoned on the eighth floor, a space recently vacated by the city's transportation department.

"It's a mind blower. How do you go missing here?" said Rob Ross, an executive assistant in the studio of architect Daniel Libeskind, who moved to the tower after getting the commission to redesign Ground Zero.

This sort of story sets the fiction writing mind racing. Where did she go to? Is she still inside the building? Hiding? Dead? If she was murdered on one of the building's empty floors, why have police found no trace of blood or other forensic detail? The building was built in 1909, is there are another way out of the building that isn't covered by security cameras, and is not included in the floor plans police used in their search? Did she want to disappear, on purpose, and did she have someone disguised as her enter the building, change into her uniform, take the cleaning trolley to the 8th floor, get out of the disguise, and then exit the building, giving the appearance the woman had gone to work, clocked in and then mysteriously vanished?

Or did the building just absorb her?

If she's never seen again, it will certainly go down as a great modern mystery.

UPDATE : How sad, a woman's body has been found "stuffed in an airconditioning duct" on the 12th floor of the building. The presumption is this will now become a murder investigation.