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.

Cast

Greta Nissen

Marchesa Marcella Galdi

Karl Ludwig Diehl

Captain von Homberg

Don Alvarado

Conte Valenti

Lester Matthews

Coloneilo Romanelli

Esme Percy

Bleuntzli - Reporter

C.M. Hallard

Colonel von Waldmuller

Austin Trevor

Captain Larco

Cecil Ramage

Ermete Davila

Wallace Geoffrey

B-18