"The Detective's Assistant" by Kate Hannigan

Remember when I read Girl in Disguise  by Greer McAllister a few years ago and lamented that there are no biographies about Kate Warne, the first female Pinkerton Detective?  There still aren't any good adult biographies of her, and that still bothers me.  BUT there are a few more books around these days that involve her, and that makes me really happy, because she wows me.
The Detective's Assistant is a middle-grade fiction book that is a great way to introduce younger folks to Kate Warne.  In th...