On Secret Service
| Industry | Film production |
|---|---|
| Headquarters | London , United Kingdom |
On Secret Service is a 1933 British thriller film helmed by director Arthur B. Woods, featuring performances from Greta Nissen, Karl Ludwig Diehl, Don Alvarado, and Austin Trevor. The movie was produced under the banner of British International Pictures and serves as an adaptation of the 1933 German production Spies at Work, with Karl Ludwig Diehl reprising his original role. Its initial screening took place in London on 15 December 1933, followed by a general theatrical release on 21 May 1934. The film was later distributed in the United States on 9 February 1936 under the title Spy 77.
Filming occurred at Elstree Studios, with the visual environment crafted by art director Duncan Sutherland.
Plot summary
Set in 1912, the Austro-Hungarian intelligence agency, the Evidenzbureau, identifies Marchesa Marcella Galdi, an Italian aristocrat visiting Vienna, as an operative for Italy. To prevent diplomatic tensions, she is quietly returned to Italy after being abducted during a ball held at Vienna's Hotel Sacher. Soon thereafter, confidential plans for an Austrian fortress mysteriously appear on Captain Michael von Homberg's desk; unable to account for their presence, he faces pressure to take his own life but instead chooses to flee.
Fast forward three years into World War I, von Homberg returns to Vienna determined to restore his honor. His commanders assign him a covert operation: disguised in a Royal Italian Army uniform, he must penetrate Italy’s borders to uncover the individual who betrayed him. After sustaining injuries and receiving treatment in an Italian hospital, he crosses paths with Marcella, who is now actively working against enemy spies. Although she harbors feelings for him, she declines to disclose the traitor’s identity.
Von Homberg journeys to Rome to establish contact with Ermete Davila, an antiques dealer who doubles as an Austrian agent, and encounters Bluentzli—a dubious character who later allies with von Homberg following persuasion. Leveraging Davila’s network, von Homberg gains access to Colonel Romanelli, head of Italian counterintelligence.
During a dinner hosted by Conte Valenti, an associate of Romanelli’s, von Homberg reunites with Marcella but remains unaware of the traitor’s name. He overhears discussions about K 77—the codename for the betrayer—who is ultimately revealed to be a senior Austro-Hungarian officer of Italian descent. With Bluentzli’s assistance, von Homberg orchestrates piloting the aircraft carrying K 77 back to Austria.
Marcella tries unsuccessfully to prevent the flight’s departure. Von Homberg successfully exonerates himself and is reinstated within the Austro-Hungarian General Staff, reflecting on his complicated connection with Marcella as he resumes his duties.
Cast
- Karl Ludwig Diehl as Captain Michael von Homberg
- Greta Nissen as Marchesa Marcella Galdi
- Don Alvarado as Conte Valenti
- Lester Matthews as Colonel Romanelli
- Esmé Percy as Bluentzli
- C. M. Hallard as Colonel von Waldmūller
- Austin Trevor as Adjutant Larco
- Cecil Ramage as Ermete Davila
- Wallace Geoffrey as B-18
- Arthur Goullet as Passport Inspector
- Ernest Jay as Hospital Patient
- Andreas Malandrinos as Innkeeper
- James Raglan as Captain Valdo
- Robert Rietti as Boy
Additional information
The movie made its debut on 15 December 1933 in London, acting as a British adaptation of the German film Spies at Work, which had first been shown nine months prior in Berlin. In the United States, it was distributed under the title Spy 77 on 9 February 1936. By that time, the original German production had been prohibited, illustrating the changing landscape of the film industry after the Weimar Republic period.