"Girl in Disguise" by Greer MacAllister

I've had such a great string of reading luck lately -- book after book that have been awesome!

Girl in Disguise is a fictional book based on the life of Kate Warne, the first woman detective hired by the famous Pinkerton Agency back before the American Civil War.  She walks into the Pinkerton agency to ask for a job, wows Mr. Pinkerton himself, and goes on to become one of his finest operatives.  Her career takes her all over the US and spans decades, though most of the book occ...