Instruct: Classify a given review as either positive or negative.
Query: Good Plot, But Not Very Exciting

The Hardys are asked to investigate the disappearance of a man who was bringing a very valuable unknown object back with him from Colombia. Also, a world-renowned spy wishes to defect to the U.S., but the terrorist organization that he works for will do anything to stop him. I thought that the plot of this book was rather interesting; however, I didn't find that the book had that much action. I would expect a book featuring a terrorist group to be loaded with action, but this really wasn't. A lot of the chapter cliffhangers I found to be dull. I understand that this book is meant for young readers and, as such, the amount of violence should be kept to a minimum while still having the book be exciting. I'm not saying that there isn't any action in it, but I think that there could have been more.