A spy in the house

Mary Quinn is given a last minute reprieve from the gallows and is sent to a school for girls.  She is savvy enough to know that this is very strange.  She doesn't know what is behind it until years later when she finishes her education and is offered a place in a detective agency run by the headmistresses of the school.Mary has secrets of her own.  She is an orphan and knows that her father was Chinese.  In 1850s London Chinese people are not admitted to polite society.  She explains away her dark coloring by saying that she is Black Irish.  That settles things for most English people but Chinese people she meets recognize the truth about her.The Agency places its agents undercover as maids or ladies' companions because women are considered not smart enough to be spies.  They can infiltrate places that men would never be able to get.On Mary's first assignment she runs into James Easton in a closet while snooping.  He is snooping about the family she is assigned to also but for different reasons.  They are forced to work together.  Mary and James have great chemistry in this series.  It is a slow romance that has many reasonable obstacles.The Agency has always placed female operatives but one of the founders wants to expand.  She agrees to let Mary go undercover as a boy in order to get a large contract.  They are hired to figure out part of the reason why a man was murdered at the construction site of the Houses of Parliament.  Mary knows nothing about construction but is trying to fit in with her new crew when an engineer comes to do a review of the building practices.  It is a physically and emotionally battered and beaten down James Easton.I think that this may be my favorite book of the series.  I don't usually say that about second books.  They are usually a let down.  In this one the author has already established the characters so well that you care about them and their adventures.  You get a better idea of the dangerous world of the extremely poor in London.  For me this book was more about life in the city and the class and gender and racial barriers that both characters are bending than the mystery.Mary is on assignment undercover in Buckingham Palace to investigate some thefts.  This gives the author the chance to examine the lives of maids in Victorian times.  They worked all the time.  They were not supposed to be seen by members of the royal family so they had to freeze or hide if any of the nobility came into a room.  They are also vulnerable to any male member of the nobility who take a fancy to them.While investigating the thefts, Mary stumbles on a scandal involving the Prince of Wales.  One of his highborn friends was killed in an opium den by a Chinese man who has the same name as her supposedly dead father.  She decides to investigate this and has to face the truth of her Chinese heritage that she has managed to avoid for most of her life.Right when she is starting to make progress, she is recalled because the Agency finds out that the engineering firm owned by James Easton will be doing some top secret work under the palace.  They don't want her to get involved with him again because he has complicated her other cases.  Should she stay or should she go?This was a great last book.  It ties up a lot of loose ends by going back to the villains of book one and seeing how everyone has changed in the intervening years.  It is hard to talk about this book much without spoilers for the series.I binged this series over the course of a week.  I absolutely loved it.  On top of complex mysteries there were discussions of the intersections of race and class and gender at the time.  Add a very fun and banter-filled romance on top of that and this is a great series even if mysteries aren't usually your favorite.This review was originally posted on Based On A True Story