Mary is saved from death and then taken to a girls school by her saviours. After a few years of attending the school, she discovers that the school is actually a cover for an all-female detective unit called The Agency. At the age of seventeen, Mary is put in the position of a lady companion, in hopes of finding out what happened to the missing cargo ships of a rich merchant. Packed with mystery, suspense, action, and a bit of romance, this mystery presents a young but daring spy who tries to uncover the secrets of a rich merchant, but discovers some of her own past along the way.
I loved how well we got to know the main character (Mary) in the book. We hadn't gotten such a clear idea of what exactly had happened in her past, but we knew that it had shaped a large part of who she was. Mary was easy to connect with, and a likeable character. I definitely liked the concept of having a strong female protagonist in the book.
I really liked this book, but something that I found a bit irritating was that there were so many subplots. Sometimes I got a bit carried away with these subordinate plots instead of focusing on the main plot, but overall, it wasn't overly distracting.
I give this book a rating of 4 stars, because it was well written with a sturdy plot, and well-thought out characters.
If you want to read a book that includes a strong female protagonist, as well as a book with a mystery to solve, I recommend this book to you!