At her Chinese father's bidding, a woman goes to murder an enemy and meets a Scotland Yard detective.
| Actor | Role |
|---|---|
 Anna May WongLing Moy | Ling Moy |
 Warner OlandFu Manchu | Fu Manchu |
 Sessue HayakawaAh Kee | Ah Kee |
 Bramwell FletcherRonald Petrie | Ronald Petrie |
 Frances DadeJoan Marshall | Joan Marshall |
 Holmes HerbertSir John Petrie | Sir John Petrie |
 Lawrence GrantSir Basil Courtney | Sir Basil Courtney |
 Harold MinjirRogers | Rogers |
| NNicholas SoussaninMorloff | Morloff |
 E. Alyn WarrenLu Chung | Lu Chung |
| OOie ChanAmah (uncredited) | Amah (uncredited) |
 Wong ChungHenchman (uncredited) | Henchman (uncredited) |
 Olaf HyttenFlinders the Butler (uncredited) | Flinders the Butler (uncredited) |
 Tetsu KomaiLao (uncredited) | Lao (uncredited) |
 George KuwaSing Lee (uncredited) | Sing Lee (uncredited) |
| HHarrington ReynoldsHobbs (uncredited) | Hobbs (uncredited) |
 Nella WalkerLady Petrie (uncredited) | Lady Petrie (uncredited) |
 Mary WongChinese Girl (uncredited) | Chinese Girl (uncredited) |