After a famous criminal is run over and killed by a milk wagon, Insp. Lestrade finds a mysterious coded note in the man's clothing. He asks Holmes to decipher it, and Holmes' subsequent investigation leads him to assume the dead gangster's identity and he follows a trail of clues to Paris.

Stars: Ronald Howard, Howard Marion-Crawford, Archie Duncan

Cast:
Ronald Howard as Sherlock Holmes
H. Marion Crawfod as Dr. Watson
Archie Duncan as Inspector Lestrade