Fatal Invitation — Gail Z. Martin

An heirloom serving dish provides a clue to a string of unsolved holiday murders and a psycho supernatural killer. With days to go before the killer strikes again, Cassidy, Teag, and Sorren must figure out whose dark magic is behind the ritual murders and stop the deadly pattern before another Thanksgiving becomes a bloodbath.

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.