I'm realizing that the more time Nancy has to take to explain who did what at the end, the worse the mystery usually is.
There were multiple mysteries going on in this book, and they all ended up being related for some reason. I was generally confused as to who was who, what role they'd played in the story so far, and who out of the many suspects could be responsible for the numerous petty crimes that occurred over the course of the book. Nancy did do plenty of detective work on her own, but she also got lucky on multiple occasions. OVERLY lucky. Like, there's no way this coincidence would ever have happened lucky.
The writing style of this book was also very dated. For example, there's a part where Nancy and Ned are staking out the culprits. While they wait, the author states, "Twenty minutes went by pleasantly as they chatted under their breath and enjoyed each other’s company." Why would you feel pleasant and relaxed while you're waiting to catch some criminals? Wouldn't you feel tense? Afraid? Amped up, at the very least? No, this is all par for the course for Nancy, and so she's able to enjoy a leisurely chat. How very relatable.
So, I guess a good word to describe the book would be "unrealistic," in terms of both the mystery and the characters, and in a way that made it very hard to get into. Which is a shame, because I do like the idea of a haunted carousel, and appreciated that we actually got to see a haunting (unlike in the PC game). Speaking of which, the only character who made it into the PC game was Joy Trent. Since she obviously wasn't the culprit, I had to guess more than usual about what the ending would be. I suppose that's a plus.