Lock every door

"No visitors. No nights spent away from the apartment. No disturbing the other residents, all of whom are rich or famous or both. These are the only rules for Jules Larsen's new job as an apartment sitter at the Bartholomew, one of Manhattan's most high-profile and mysterious buildings. Taken in by the splendor of her surroundings Jules accepts the terms, ready to leave her past life behind. She is drawn to fellow apartment sitter Ingrid, who reminds her of the sister she lost eight years ago. Ingrid confides that the Bartholomew is not what it seems, that the dark history hidden beneath its gleaming facade is starting to frighten her and the next day she disappears. Can Jules discover the truth and escape before her temporary status becomes permanent?"--Adapted from jacket.