Sylvia of the Secret Service (1917)
Genres: Thriller, Silent
Cast: Irene Castle, Elliott Dexter, Erich von Stroheim
Sylvia of the Secret Service is a 1917 American silent thriller film directed by George Fitzmaurice and starring Irene Castle, J.H. Gilmour and Elliott Dexter. Erich von Stroheim worked as assistant director and technical advisor as well as playing the role of the villain. It was given a second release in 1922.