Lidia Wysocka was a Polish stage, film and voice actress, singer, cabaret performer and creative director, theatre director and costume designer, editorialist.

I Was a Spy is a 1933 British thriller film directed by Victor Saville and produced by Michael Balcon. It stars Madeleine Carroll as Marthe Cnockaert, Herbert Marshall, and Conrad Veidt. Based on the 1932 memoir I Was a Spy by Marthe Cnockaert, the film is about her experiences as a Belgian woman who nursed German soldiers during World War I while passing intelligence to the British. The film was produced by Gaumont British Picture Corporation with Woolf & Freedman Film Service and Fox Film Corporation distributing in the United Kingdom and the United States respectively.