- Country: Spain, West Germany
- Genres: Crime, Drama, Mystery
- Release: 1963-11-28
- Director: Franz Josef Gottlieb
- Writers: Alexandra Becker , Rolf Becker , José Luis Guarner , José María Otero
- Language: German
- Stars: O.W. Fischer , Karin Dor , Klaus Kinski , Werner Peters , Doris Kirchner , Eddi Arent , Claude Farell , Gabriel Llopart , Fernando Sancho , José María Caffarel
- Runtime: 107 min
- Awards: 1 nomination
- AKA: A Aranha Negra (Portugal, Portuguese Republic) , Das Geheimnis der schwarzen Witwe , Le secret de la veuve noire (France, French Republic) , Araña negra (Spain) , To mystiko tis mavris arahnis (Greece) , The Secret of the Black Widow , The Secret of the Black Widow (Canada) , La vedova nera (Italy) , Secretul văduvei negre (Romania) , The Secret of the Black Widow , The Secret of the Black Widow (United States of America) , Das Geheimnis der schwarzen Witwe , The Secret of the Black Widow (United Kingdom) , O Segredo da Aranha Negra (Brazil)
- Plot: A journalist with a drinking problem investigates, along with the police, a string of strange murders. Someone is killing members of a South American expedition using poison darts with rubber black widow spider on top of them.
- IMDB:tt0057095
Das Geheimnis der schwarzen Witwe Cast · · · ALL
Franz Josef Gottlieb
Director
O.W. Fischer
Reporter Wellby
Karin Dor
Clarisse
Doris Kirchner
Helen Osbourne
Werner Peters
William Osbourne
Eddi Arent
Fish
Klaus Kinski
Boyd
Claude Farell
Mrs. Dyke
Gabriel Llopart
Selwood
Fernando Sancho
Slim
José María Caffarel
Cartwright
Antonio Casas
Bronsfield
Tomás Blanco
Félix Dafauce
Cris Huerta
Ángel Menéndez
George Rigaud