Frankenstein The Dead Town - by Dean Koontz (2005)

Dean Koontz’s enthralling Frankenstein series has redefined the classic legend of infernal ambition and harrowing retribution for a new century and a new age. Now the master of suspense delivers an unforgettable novel that is at once a thrilling adventure in itself and a mesmerizing conclusion to his saga of the modern monsters among us.
 
FRANKENSTEIN: THE DEAD TOWN
 
The war against humanity is raging. As the small town of Rainbow Falls, Montana, comes under siege, scattered survivors come together to weather the onslaught of the creatures set loose upon the world. As they ready for battle against overwhelming odds, they will learn the full scope of Victor Frankenstein’s nihilistic plan to remake the future—and the terrifying reach of his shadowy, powerful supporters.

Now the good will make their last, best stand. In a climax that will shatter every expectation, their destinies and the fate of humanity hang in the balance.