Coffin Box — Gail Z. Martin

Set in modern-day Charleston. When a prominent man and his wife die suddenly, a cursed gift appears to be the culprit. Cassidy, Teag and Sorren must hunt a supernatural killer before it strikes again.

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.