No visitors. No nights spent away from the apartment. No disturbing the other residents. These are the only rules for Jules Larson's new job as apartment sitter at the Bartholomew, one of Manhattan's most high-profile private buildings and home to the rich and famous.

Recently heartbroken and practically homeless, Jules readily accepts the terms. When a neighbour confides the Bartholomew's dark history Jules brushes it off as a harmless ghost story—but the next day, her new friend has vanished.

And then Jules discovers that her friend is not the first resident to go missing…