The Riddle of the Mysterious Light is a mystery novel by Thomas W. Hanshew. Hamiton Cleek must solve a mysterious riddle in broad daylight, in this fascinating story where people can change their identity by simple ways.
The other reviewer for this book at the time of my writing says that you need to suspend your disbelief, to enjoy it. I say mostly no. You must know Cleek. And be willing to accept that he is one of those people who are constantly in demand by this time.
Written by a husband and wife team, Detective Cleek is a man of 100 faces. Fast paced, with several mysteries in my edition. I had to google French Apaches, which was a violent street gang. Nothing to do with native Americans.
The Cleek mysteries are very much in the line of the old Nick Carter stories: they require you to suspend a LOT of disbelief. If you can enjoy stories where people can completely change their identity by simply changing their expression, then you will enjoy this. If you can't suspend that much disbelief, then you will probably prefer other books to this!