In "Cherry Blossoms", a Chinese witness is ambushed and her guards shot; but she manages to escape, although she is injured. Nick Knight canvasses the area in which she has disappeared. At the end of the alley is the shopfront of the Lucky Printing company. Above it is the office of a Chinese acupunturist and herbalist, Dr. Chong.
Nick eventually discovers that Dr. Chong has been secretly treating the missing witness.