Sylvia of the Secret Service

Irene Castle

Sylvia Carroll

J.H. Gilmour

Van Brunn

Elliott Dexter

Curtis Prescott

Erich von Stroheim

Peter

Macey Harlam

(uncredited)

Antonio Moreno

(uncredited)

Suzanne Willa

Fay Walling

J.W. Percival

John W. Homing