gosh, this is a tough one to rate fairly. I'm going to give it a tentative 4 star rating, because the entire book was at that level...but I will go mulling over the ending for a while; "were those clues and a solution that merit 4 stars?". I may drop the book down to 3.5 stars...but I'm not sure. it was a very entertaining read, and I did enjoy the finish, but I'm not sure how high the solution ranks, even as compared to other Miss Silver books. definitely a bunch of them were cleverer in the wrap-up...but I did like this book a lot, for many reasons.