"Can it be covered without any trace?" A ghostly voice came slowly from the darkness.

"Yes, it has been well handled. Don't worry! No one will figure it out!" a woman said in a low and soft voice, which sounded pleasant and weird in the dark.

"Good! If you hadn't succeeded, I would never help you again!" The ghostly voice was so intermittent and unreal that it wasn't like a human being's voice.

"I never fail. Besides, it was just a piece of ...