George Marsden Plummer! Does the name convey anything to you? Ex-Scotland Yard man, criminal, renegade Englishman and chief of the Riff tribe in Morocco! That is George Marsden. He is, too, one of Sexton Blake's most formidable enemies. In this story he has the effrontery to come to London as the chief of an official political Mission -and unwittingly crosses Blake's path again. Here is the story of it, now settle down to an hour or two's real enjoyment.