About the book: 1937 / This time, detective John Dalmas is hired as a bodyguard for a socialite. A ransom must be paid for the stolen necklace. It would seem like a trivial matter: come to the place, give the money, and prevent the employer from getting hurt. But as a result, the client is dead, there is no money, and John himself miraculously remained alive. But something haunts me, something doesn’t add up... What secrets does Chinese jadeite keep??