We meet first Dr Petrie who is immediately surprised by a late night visitor, "a tall, lean ... square cut ... sun baked" man who turns out to be his good friend (Commissioner Sir Denis) Nayland Smith of Burma, formerly of Scotland Yard, who has come directly from Burma. We then learn that various men associated with India are the target of assassination by the Chinese Dr Fu Manchu, who seems to have been active in Burma (as distinct from India), in places such as Rangoon, Prome, Moulmein and the "Upper Irrawaddy" and who comes to England with dacoits and thuggees.