Edgar Wallace,
Number Six and the Borgia — VI. Caesar Tells of Number Six
(1921)
“ Cæsar nodded. “He or she is Number Six,” he repeated gravely. “Whether it is a man or a woman, I have been unable to discover. -The person is described as Number Six in the records—there is some reason for the secrecy. Scotland Yard believes that I am a sinister individual, and it is remarkable that the agent they have chosen is not an ordinary member of the police force, but some enemy of mine—or rather, some person who regards himself or herself as my enemy, for—er—private reasons. “There are, of course”—he shrugged his shoulders—“people who hate me. There is a man named Welland. ”
