Kill The Night - Terry Mark - Bog

This is an out and out pulp thriller that moves like a runaway freight train." ESO Network Review
Back Cover texts (could be a blurb, synopsis, or about the book):
Nikola Tesla and Thomas Edison are chased into the Old West by a Gunslinger Vampire who fears their electricity will KILL THE NIGHT...
An adventure that stretches from Paris to New York, through the 1893 Worlds Fair to the Old West. Nikola Tesla and Thomas Edison are racing to see who will lead the Twentieth Century into the Electric Age.
But the night holds tightly to its dark corners. A mysterious and dangerous Gunslinger is watching, following, and waiting for an opportunity to turn back history. He will chase Tesla, Edison, and journalist Ida Tarbell from Chicago to Kansas City, across the Kansas plains, and to the mountains of Colorado.
Believing their electricity will destroy everything he loves, he has one objective-stop the inventors and destroy their inventions.