Vicious Moon

“A powerful witch might live a long time, but a single well-placed bullet could change that. While my preferred weapon was magic, I was not averse to shooting anyone or anything offering my sister or me harm.”
 
Ex-soldier and earth witch Nyx Ianira is working as a PI in San Francisco when she sees the last thing she ever wants to see: the Sisters of Justice—the mysterious earth witch police force. A Triad of Sisters usually means an execution mission, but the Sisters’ only goal is to capture and escort Nyx across the country.
 
Nyx is badly needed back in Twitch Crossing, Georgia, the place she ran away from ten years ago to escape the stiff rules and duties of being a true witch. She wanted a life of her own. Now she’s being dragged back to her swampy hometown because another life is in danger: Her little sister is missing, and Nyx is the only one who can track her down in Duivel, Missouri.
 
But the key to finding her may lie with dark and tempting Etienne—a sinister criminal with a fearsome reputation, a ruthless attitude, and a total immunity to magic....