Third release in 'The Mystery of Dr. Fu Manchu' series, where the police has to investigate the clue of the pigtail wig.
| Actor | Role |
|---|---|
| HH. Agar LyonsDr. Fu Manchu | Dr. Fu Manchu |
 Fred PaulNayland Smith | Nayland Smith |
 Joan ClarksonKaramaneh | Karamaneh |
| HHumberston WrightDr. Petrie | Dr. Petrie |
 Frank WilsonInspector Weymouth | Inspector Weymouth |
| EErnest SpauldingShen Yan | Shen Yan |