Lock Every Door

by Riley Sager

"Lock Every Door" follows Jules, a down-on-her luck young woman who takes a questionable job apartment sitting in one of the oldest, most glamorous and certainly quite mysterious buildings in New York City. There are many rules to the job: no visitors, no nights spent away from the apartment and no disturbing other residents. What seems easy money at first becomes daunting as an isolated Jules searches for answers in another tenant's disappearance.