Y. S. Lee did a great job writing, “A Spy in the House.” This YA mystery thriller is sure to capture your attention and keep your interest throughout the entire book. I found it similar, in parts, to the popular Enola Holmes stories. The protagonist is a 17-year-old girl who is quite capable in many ways for her new life as an undercover investigator. Though she does have her own history, albeit only partly known to her, that she feels she must keep secret in order to fit into the Victorian society in which she lives, she still seeks to find out more about her deceased parents.
It seems the book is YA (due to the age of the characters, the bit of language that is used, and a few circumstances suggesting improprieties) it is possibly something an MG reader may enjoy too.
All that said, I’m looking forward to reading the other 3 books in “The Agency” series.