It was a rather lackluster book on the whole. Simmons made an attempt to blend sci-fi, horror, drama, and thriller elements all together. However, the end result was far from what was expected. It didn't really fit neatly into any of those genres. There were some nice bits and pieces here and there, especially in the last 30 pages or so. But unfortunately, the horror parts fell flat and failed to really send shivers down the spine. The alternating chapters between the present-time thriller and the past-time drama ended up confusing me more than adding any real depth or substance to the story-telling.
Moreover, whenever one decides to involve children in a horror story, there better be a really good reason for doing so. This book, unfortunately, didn't have any such valid excuse. It just seemed like a random and perhaps ill-conceived choice that didn't really contribute to the overall quality or coherence of the narrative.