I liked this book and it was a quick read but am waivering on my 3 stars upon deeper reflection. (I would probably give it 2.5) The story switched back and forth from the past and present fairly seamlessly and it did build some suspense, I just thought toward the end it lost a bit of “steam” for me. I felt the story could have been longer and more developed. I also thought that the boiler monster had a fairy tale feel and was not scary or menacing at all. Another reviewer mentioned the book had a YA vibe and I must agree. Its too bad because I was jazzed up to read this book. I really wanted to like it more, but just think the flat parts of the story drowned out the flashes of possible greatness that were too few and too far between.