Atlantean Devices - Sons of Devils - Atlantean Devices, #1

When the magic returned, the monsters came with it. Pursued by his father's assassin-butler, British scholar Frank flees to Romania to study the newly working Atlantean technology on nobleman Radu's land. His arrival sparks Radu's ancient vampire parents to want more than their traditional tithe of terrified peasants. As the vampires take their bloodlust to the capital, and then to the Ottoman Empire, it soon becomes apparent they will be satisfied with nothing less than the world.
They are masters of mind-control, able to double the size of their army every night, and their only opposition is a nervous scholar, an ugly enchantress, a shape-shifting Roma girl and their own loving son. Things are not looking good for the human race. "an enthralling mystery and would be enjoyed by anyone who enjoys a dark narrative with moments of humor." - Foreword Reviews "The castle itself is absolutely hair-raisingly scary.
These are not your sparkly or nice vampires. These are your old-fashioned predators who see humans as food." - Scattered Thoughts and Rogue Words "The world in which this story - these stories - take place is different in ways that . well, I was going to use the word "fascinated" again. Put it this way instead: It's a great time, and I can't wait for more." - Stewartry