From Illusion and Blood - The Knife-bearers and the Clans, #1

When the ghost hunting clan Renee Duff is a part of receives an invitation to purge the famous Harrison House of spirits, she's pleased to go on her first hunt.  However, the invitation seems too good to be true.  Rumor says the wealthy Harrison family pays allegiance to demons, yet Renee's mother, and clan leader Angie, dismisses the rumors and accepts the job. But rival clan leader Daniel Bergen is already there, and their job isn't as simple as Angie thinks.
In the opulent, gloomy rooms of Harrison House, a deadly game begins that could tear Renee's clan and family apart.