Crumbling Bones — Mary Coley

Kyra Blackwood doesn't expect to find dead people when she spends the night in her hometown's most famous mansion. Orphaned at ten years old, Kyra spent seven years in foster care before running away from the city at 17. For the past twenty years, nightmares about her foster home and the mansion have tormented her as she forged a new identity and built a life as a rancher's wife. The nightmares are getting worse. When a charitable raffle offers an overnight in the mansion as a prize, Kyra buys a ticket. If she wins, it's a chance to put the nightmares to rest by proving there's nothing to fear in the town or the mansion, unless those nightmares are actually memories. Someone else is in the mansion for the party too, preparing for fatal attack on the homeowner and anyone who gets in the way of his plan for revenge.