The Invoker — Jon F. Merz

THE FIXER and THE INVOKER (2 Lawson Vampire Novel Perbacks). Both published by Pinnacle Books. THE FIXER (Lawson Book 1, May, 2002, 349 pages, ISBN: 0786015004) and THE INVOKER (Lawson Book 2, October 2002, 351 pages, ISBN: 0786015012). "Meet Lawson: vampire by birth, Fixer by trade. His mission: preserve the secret existence of vampires by any means necessary. There's just one problem - his oldest enemy Cosgrove is back, killing humans and threatening to unleash an ancient unholy evil. Can Lawson stop Cosgrove and still adhere to the very laws he protects by not falling in love with a beautiful human assassin named Talya?"