Having read most of the books in this series, but not in order, I've decided to go back to the beginning. It's a treat. Even within this book, it's fun to watch the development in the relationship between the retired detective and the intellectual teenager. She begins by solving a puzzle involving painted dots on bees. By the end of the book, Holmes has taken Mary Russell on as his student and is teaching her the art of detection. Their first case seems simple and straightforward. By the end of the book they find themselves in enough of a pickle that leaving England for a while seems wise. As with their previous case, they go in disguise, something Holmes is very good at, and mentors Russell in that as well. A very satisfying beginning to the series. I confess I've never read the original Sherlock Holmes. Sometime I really should! I've read several other authors' attempts to carry on with the life of Holmes, and none seem as real as this one.