Juvenile fiction with sustained action and an exciting mystery plot so skillfully written it will appeal equally to guys and girls. Sibling sleuths, Arthur and Kristin Davis come face-to-face with the "big time" when Madame Dragonfly hires them to give her information on the Autumn Rose, which they believe is just a nearby horse farm. But it isn't, and they aren't the only ones who know what the real Autumn Rose is.