Lock Every Door

I received this book through NetGalley in exchange for an honest review. First below is the Goodreads summary, then my actual review.

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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. Recently heartbroken and just plain broke, Jules is taken in by the splendor of her surroundings and accepts the terms, ready to leave her past life behind.

As she gets to know the residents and staff of the Bartholomew, Jules finds herself drawn to fellow apartment sitter Ingrid, who comfortingly, disturbingly reminds her of the sister she lost eight years ago. When Ingrid confides that the Bartholomew is not what it seems and the dark history hidden beneath its gleaming facade is starting to frighten her, Jules brushes it off as a harmless ghost story . . . until the next day, when Ingrid disappears.

Searching for the truth about Ingrid's disappearance, Jules digs deeper into the Bartholomew's dark past and into the secrets kept within its walls. Her discovery that Ingrid is not the first apartment sitter to go missing at the Bartholomew pits Jules against the clock as she races to unmask a killer, expose the building's hidden past, and escape the Bartholomew before her temporary status becomes permanent.

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Jules was a fascinating character with a tragic background that made her the fighter she was throughout this story, and I loved reading about all her memories as well as her interactions with each of the fellow residents of the Bartholomew. You could literally feel the palpable terror rising from the page as each situation occurred and it was amazing!!! Holy cow. This was my first Riley Sager book, but it definitely won't be my last. This book kept me on my toes right from the start and kept me guessing the entire way through. Just when I THOUGHT I had it figured out, it took a different turn. The person I mainly suspected did end up being a culprit, but it was in a FAR more complex way than I could have ever even imagined. 5🌟 for sure