A professor who found out a formula to make diamonds from oil is killed in Tehran and his nephew who is a spy is sent to Tehran by Interpol in order to find the formula.
| Directing | Dariush Mehrjui | Director |
| Writing | Dariush Mehrjui | Writer |
| Art | Valiollah Khakdan | Art Direction |
| Camera | Jamshid Alvandi | Assistant Camera |
| Camera | Hadi Meshkat | Still Photographer |
| Crew | Mostafa Alemian | Cinematography |
| Sound | Morteza Hananeh | Music |
| Editing | Musa Afshar | Editor |
| Sound | Fereydoun Naseri | Sound |
| Costume & Make-Up | Zoya Varteresian | Makeup & Hair |
| Costume & Make-Up | San'an Kiani | Makeup Artist |
| Production | Reza Fazeli | Producer |
| Production | Nosratollah Montakhab | Producer |
| Sound | Rubik Mansuri | Sound |
| Sound | Nasser Khodadad | Sound |