- Country: West Germany
- Genres: Action, Romance, Thriller
- Release: 1974-04-22
- Director: Wolfgang Petersen
- Writers: Horst Bosetzky , Manfred Purzer
- Language: German
- Stars: Klaus Schwarzkopf , Elke Sommer , Jürgen Prochnow , Ulla Jacobsson , Kristina Nel , Walter Gross , Anita Kupsch , Berta Drews , Otto Sander , Claus Theo Gärtner
- Runtime: 105 min
- Awards: 2 wins & 1 nomination
- AKA: One of the Two of Us (Australia) , Któryś z nas (Poland) , One or The Other of Us , One or the Other , Dömd att förlora (Sweden) , One or the Other (United Kingdom) , Einer von uns beiden , One or The Other (Canada) , One or the Other (United States of America) , Einer von uns beiden
- Plot: What started as a simple blackmail, quickly devolves into a downward spiral of psychological and physical violence.
- IMDB:tt0071459
One or the Other Cast · · · ALL
Wolfgang Petersen
Director
Klaus Schwarzkopf
Professor Kolczyk
Elke Sommer
Miezi
Jürgen Prochnow
Bernd Ziegenhals
Ulla Jacobsson
Reinhild Kolczyk
Kristina Nel
Ginny Kolczyk
Walter Gross
Opa Melzer
Anita Kupsch
Sekretärin
Berta Drews
Mutter Braats
Otto Sander
Rulle Ruhlsdorff
Claus Theo Gärtner
Kronert
Peter Schiff
Kommissar Rannow
Ortrud Beginnen
Babsy
Wolf Roth
Hohenberg
Fritz Tillmann
Dr. Sievers
Tilo Prückner
Drögnitz
Gunther Beth
Kronert