Free-lance undercover agent Coplan receives a phone call from an old girlfriend in Turkey. The panic-stricken woman gives sketchy details of a plot that threatens world security. When Coplan arrives, he is told the woman has been killed, and the trail of the murderer leads to her mad-scientist brother.
| Actor | Role |
|---|---|
 Claudio BrookFrancis Coplan | Francis Coplan |
 Margaret LeeMara / Eva | Mara / Eva |
 Klaus KinskiTheler | Theler |
 Jean ServaisSaroghu | Saroghu |
 Jean TopartLieutenant Sakki | Lieutenant Sakki |
 Bernard BlierMarscar | Marscar |
 Hans MeyerHugo | Hugo |
| NNanna MichaelYasmine | Yasmine |
| MMarcella Saint-AmantYasmine | Yasmine |
 Roger LumontLe glouton | Le glouton |
 RobertoLe nain / Dwarf | Le nain / Dwarf |
| AAgatha AlmaFaith | Faith |
 Andrea AureliGamal | Gamal |
 Aldo CantiVoyou | Voyou |
| SSergio JossaBarman | Barman |