- Country: Germany, UK
- Genres: Crime, Drama
- Release: 1931-03-08
- Director: Richard Eichberg
- Writers: Curt J. Braun , Rudolph Cartier , Max Ehrlich , Egon Eis
- Language: German | English
- Stars: Hans Albers , Charlotte Susa , Margot Landa , Karl Ludwig Diehl , Eugen Burg , Harry Hardt , Hermann Blaß , Erich Schönfelder , John Mylong , Hugo Fischer-Köppe
- Runtime: 82 min
- Awards: N/A
- AKA: Nachtvogels (Belgium) , Palermo Cinayeti (Turkey) , Tajanstveni dvojnik , Scotland Yard's Mesterstykke (Denmark) , Der Greifer (Germany) , Oiseaux de nuit (France, French Republic) , O Rei dos Polícias (Portugal, Portuguese Republic) , Der Greifer , Oiseaux de nuit (Belgium) , Schatten Londoner Nächte , Greifer el as policíaco (Spain)
- Plot: THE 1930 FILM THAT SKYROCKETED HANS ALBERS TO FAME!
- IMDB:tt0020789
Der Greifer Cast · · · ALL
Richard Eichberg
Director
Hans Albers
Sgt. Harry Cross
Charlotte Susa
Dolly Moorehead
Karl Ludwig Diehl
Snorri
Eugen Burg
Chefinspektor Warrington
Harry Hardt
Inspektor Sinclair
Margot Landa
Alice, Harrys Frau
Hermann Blaß
Prater-Pepi
Erich Schönfelder
Barker, Kriminalreporter
John Mylong
Zahnstocher-Jeff
Hugo Fischer-Köppe
Schrammen-Dick
Hertha von Walther
Flossie
Wera Engels
Mabel
Leo Monosson
Stimmungssänger
Lotte Stein
Hausfrau