Wicked Dreams — Gail Z. Martin

Set in modern-day Charleston. Inexplicable murders among King Street merchants look like the work of a long-dead serial killer. Cassidy, Teag and Sorren go looking for an undead slasher before the body count rises.

This series of adventures spans over 500 years, from the 1500s to modern day as a small cabal of vampires and their human helpers battle supernatural enemies to find and destroy dangerous magical items and keep the world safe from dark forces.