The Speaker of Mandarin

SUMMARY:
Chief Inspector Wexford is in China, visiting ancient tombs and palaces with a group of British tourists. After their return to England, one of his fellow tourists is found murdered. As he questions other members of the group, Wexford finds secrets of greed, treachery, theft, and adultery, leading the distressed inspector to ask not who is innocent, but who is least guilty . . .