Anny Ondra in the context of "Blackmail (1929 film)"

Blackmail is a 1929 British crime thriller film directed by Alfred Hitchcock and starring Anny Ondra, John Longden, and Cyril Ritchard. Based on the 1928 play of the same name by Charles Bennett, the film is about a London woman who is blackmailed after killing a man who tries to rape her.

After starting production as a silent film, British International Pictures decided to adapt Blackmail into a separate sound film. It became the first successful European talkie; a silent version was released for cinemas not equipped for sound (at 6,740 feet), with the sound version (7,136 feet) released at the same time. Both versions are held in the British Film Institute collection.