Also Known As:
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- Die neun Pforten
- La neuvième porte
- Девятые врата
- 9. kapi
- A Nona Porta
- A kilencedik kapu
- Den niende porten
- Deveta vrata
- Dziewiate wrota
- I enati pyli
- La última puerta
- La nona porta
- La novena puerta
- Nionde porten
- O Último Portal
- The Ninth Gate
- Yhdeksäs portti
- Roman Polanski
- Arturo Pérez-Reverte ("El Club Dumas" - novel)
- John Brownjohn
- Enrique Urbizu
- Roman Polanski
- Johnny Depp ... Dean Corso
- Frank Langella ... Boris Balkan
- Lena Olin ... Liana Telfer
- Emmanuelle Seigner ... The Girl
- Barbara Jefford ... Baroness Kessler
- Jack Taylor ... Victor Fargas
- José López Rodero ... Pablo & Pedro Ceniza / 1st & 2nd Workmen (as Jose Lopez Rodero)
- Tony Amoni ... Liana's Bodyguard
- James Russo ... Bernie
- Willy Holt ... Andrew Telfer
- Allen Garfield ... Witkin
- Jacques Dacqmine ... Old Man
- Joe Sheridan ... Old Man's Son
- Rebecca Pauly ... Daughter-In-Law
- Catherine Benguigui ... Concierge
- Maria Ducceschi ... Secretary
- Jacques Collard ... Gruber
- Dominique Pozzetto ... Desk Clerk
- Emanuel Booz ... Baker (as Emmanuel Booz)
- Lino Ribeiro de Sousa ... Hotel Porter (as Lino Ribeiro De Sousa)
- Asil Raïs ... Cabby (as Asil Rais)
- Bernard Richier ... Cafe Owner
- Marinette Richier ... Cafe Owner
- Diane Hawkins
- Jane Bradbury ... Demon
- Samuel de Luze ... Extra
- Christopher Goodman ... American Businessman
- Lee Michelsen ... Homeless
- Jacquelyn Toman ...
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