This action-packed episode features one of the Devil Doctor's most enjoyably silly schemes to do away with his nemesis Nayland Smith. When Smith goes missing, it's up to Dr Petrie to continue the hunt for the Si-Fan, Fu-Manchu's secret society. On the trail of a mysterious man with a limp, Petrie disguises himself as a rough bargee to investigate a smoky riverside drinking den, the Joy-Shop Club.
| Actor | Role |
|---|---|
| HH. Agar LyonsDr. Fu Manchu | Dr. Fu Manchu |
 Fred PaulNayland Smith | Nayland Smith |
| JJoan ClarksonKaramaneh | Karamaneh |
| HHumberston WrightDr. Petrie | Dr. Petrie |
 Frank WilsonInspector Weymouth | Inspector Weymouth |
| RRoy RaymondSergeant Fletcher | Sergeant Fletcher |
 Julie SuedoZarmi | Zarmi |