Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A promising spark that fizzled out....

You can read the other reviews for the book synopsis. I just finished it (finally) and it left me flat - literally can't remember the main characters' names. Even though it was a small book of a little over 200 pages it still seemed to drag on forever. There was no "mystery" to the "mystery". No sizzle to the sex. The romance had a couple of cute sparks ... that didn't go anywhere. The book just seemed tedious. I've read much better works from this author. I give it a "pass".