X stood up and left. The ghosts were not invisible he was just not looking well enough. He or she pulled the hood down tighter. As X passed the man she turned her cloaked gaze to him. "Beware the people who try to "help" you in this city stranger. Everyone does something for a price. Their price might be something you are unwilling to pay." X's voice wasn't misty it was lifeless. Monotone and without emotion. It came from dealing with the dead. Ghosts. Zombies. The occasional vampire. Skeletons. You know it as dead or resembling dead then X dealt with it. After saying that to the man X walked to the door and a ghostly white mist surrounded X getting too thick to see through. When it faded away X was gone. Time to go be a thorn in the Thief Queen's side. X smiirked a bit as he  or she reappeared in a ghostly mist miles away. In X's own way X had been trying to give the man a veiled message. The man would need to puzzle it on his own what he or she had meant. It had been a warning to someone who was not evil or criminal. If he was smart he would figure it out and heed it. For now X began to summong ghosts, all kinds including banshees, and sent them to go scare the hell out of the court of thieves.