On Secret Service is a 1933 British thriller film directed by Arthur B. Woods and starring Greta Nissen, Karl Ludwig Diehl, Don Alvarado, and Austin Trevor. It was produced by British International Pictures. It is based on the 1933 German film Spies at Work with Karl Ludwig Diehl repeating his role from that film. On Secret Service premiered in London on 15 December 1933 and was theatrically released on 21 May 1934. In the United States, the film was released on 9 February 1936 as Spy 77.
American film poster
Greta Nissen was a Norwegian-American film and stage actress.
Nissen in 1925
Greta Nissen by Tempest Inman in Photoplay of July 1925
Nissen in 1927
Promotional photo of El Brendel and Greta Nissen for the 1931 comedy film Women of All Nations