Desc: Sultanin Sirri: Directed by Hakan Sahin. With Mark Dacascos, Emanuel Bettencourt, Sinan Albayrak, Burak Sergen. The film tells the story of an American professor, Ciano Depp, who learns the secrets of Ottoman Sultan Abdulhamid II about crude oil. The professor comes to Istanbul and begins to work hard to find the sultan's mysterious chest, kept in the depot of the Topkap&# 305; Palace Museum.