On Secret Service
Greta Nissen stars as an Italian noblewoman living a dangerous double life as a spy. A remake of the celebrated German thriller Spione am Werk. Co-starring noted German actor Karl Ludwig Diehl and American matinee idol Don Alvarado. The film takes place in Vienna, 1912. When an Austrian staff officer is implicated by association with a known Italian spy he goes on the run. Three years later - as the Great War gets into full swing - he returns and begs the Austrian Secret Service to allow him to clear his name from suspicion.
- genus: Drama, Romance, War
- Studio: British International Pictures
- keyword: based on novel or book, spy
- cast: Greta Nissen, Karl Ludwig Diehl, Don Alvarado, Lester Matthews, Esme Percy, C.M. Hallard
