From Protector of the Grey House:
The spot on the floor was staring back up at her when she opened her eyes. She frowned, knelt and touched the spot. Dried blood. She glanced further up the walkway and realized the irregular blood trail would lead the way. Natalia wondered whose blood it was as she started down the hall. She heard her name being called through the wall as she followed the trail. She ignored it and jogged through the maze sure the voice was Joseph’s. Natalia knew he would be able to follow her through here. Probably created it with Vincent or for Vincent. Not wanting to hurry and lose her way, she simply followed the trail.