Ethan Reiff and Cyrus Voris are American screenwriters and producers. They are known for their work in both feature films and television. Reiff and Voris met while both were undergraduates at New York University's Tisch School of the Arts. Beginning in the late 1980s while still based in New York, they wrote - along with Mark Bishop - several scripts including Slayer and Demon Knight. The latter became a popular spec script that saw considerable positive coverage in Hollywood for a number of years. The duo's first produced efforts came with rewrites on Rafal Zielinski's Under Surveillance (1991), Albert Pyun's Brainsmasher...A Love Story (1993), and the Dolph Lundgren vehicle Men of War (1994).

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