The king scratched his chin again. "The book is indeed in my posession in my libary here. It was my neice who devised the spell that has been killing mortals. She used it as discoplinary measure when a fae in one of the courts was convicted of a particularly heinous crime." He explained softly, and you could see by the look in his eyes that he didn't like that his neices's memory was being smudged by some human.
Dean sooke softly, still bowed in respect. He had never met a king aside from crowley, but this seemed like the proper thing to do. "We would bring you back both both books. Something created by fae or any other supernatural being, belongs only in the care of that particular being or someone who can handle it power." He replied, and the king nodded. He could see right through to all 3 of their souls, and he could see their good intentions. "You may use the book."
Dean smiled kust a little. "Thank you, Majesty. That's kind of you." He replied softly, bowing again. While it was slightly out of character for the man, he was trying very hard not to accidentally insult the powerful fae king.