09 - X Y Z - A Detective Story by Anna Katharine Green

In the world of detective work, uncovering one mystery often leads to the unexpected discovery of another. This tale is no exception, and the circumstances are far from ordinary. A cunning gang of counterfeiters have been eluding the keenest minds of the Secret Service, flooding western Massachusetts with fake Treasury notes. Just when it seemed all hope was lost, a series of peculiar letters addressed to X. Y. Z. in Brandon, Mass., began to appear. Could this be the long-awaited breakthrough? Sent on a mission to investigate, I ventured northwards into the heart of the mystery. (Excerpt from chapter 1)