On Secret Service

Plot Summary

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.

Top Cast

Greta Nissen Marchesa Marcella Galdi

Karl Ludwig Diehl Captain von Homberg

Don Alvarado Conte Valenti

Lester Matthews Coloneilo Romanelli

Esme Percy Bleuntzli - Reporter