This time Fu Manchu and his army of henchmen are kidnaping the daughters of prominent scientists and taking them to his remote island headquarters. Instead of asking for ransom, Fu demands that the fathers help him to build a death ray, which he intends to use to take over the world. But Fu's archenemy, Nayland Smith of Scotland Yard, is determined not to let that happen.
| Directing | Don Sharp | Director |
| Writing | Don Sharp | Writer |
| Writing | Harry Alan Towers | Writer |
| Writing | Sax Rohmer | Characters |
| Production | Harry Alan Towers | Producer |
| Art | Frank White | Art Direction |
| Camera | Ernest Steward | Director of Photography |
| Production | David Henley | Producer |
| Sound | Bruce Montgomery | Music |
| Editing | Allan Morrison | Editor |
| Costume & Make-Up | George Partleton | Makeup Artist |
| Costume & Make-Up | Anne Box | Hairstylist |
