The Knocking on the Door
Written by
Sax Rohmer
Copyright 1913
First appearing in Collier's on June 28, 1913, then on July, 1913 in The Storyteller. It later made up the final chapters 27-30 in .
In the showdown with Fu Manchu, the police inspector helping Nayland Smith becomes a victim and to save his life, Smith must make a deal with the Devil Doctor.