Buttons — Gail Z. Martin

Cassidy Kincaide runs Trifles & Folly in modern-day Charleston, an antiques and curios shop with a dangerous secret and an immortal silent partner. A hungry ghost haunts a dead man's journals, and Cassidy and Sorren must destroy the spirit before it exacts its price in blood.

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.