It Waits on the Top Floor

● "Thursday night, it was a dirt lot. Friday morning, it was a 60-story skyscraper. A tech billionaire wants the building's secrets for herself. She hires a team to reverse-engineer the overnight construction. But she knows more than she's letting on. The facade of an empty office building will quickly be shattered. Ghostly figures stalk the explorers. The walls themselves are hungry. And something is waiting on the top floor." ― paraphrased from this book's Amazon product page as of 2022-02-22.