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.

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Main Cast: Nancy Kovack, Reza Fazelli, Taghi Zohuri, Marina Mater, Zackaria Hashemi, Nersi Korkia, Katayun Amir Ebrahimi, Hamide Kheyrabadi, Dariush Talayi, Saber Atashin

Director: Dariush Mehrjui

Writer: Dariush Mehrjui

Editor: Musa Afshar

Cinematographer: Mostafa Alemian

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