The Mystery Girl
Plot: Prince Sebastian of Lurania is forced to go into hiding when German forces invade his country. His niece, Countess Therese, is an ambulance driver with the French army
Ethel Clayton. Ethel Clayton was 36 in The Mystery Girl as 'Countess Therese'.
Henry Woodward. Henry Woodward was 36 in The Mystery Girl as 'Captain Thomas K. Barnes'.
Clarence Burton. Clarence Burton was 36 in The Mystery Girl as 'Prince Ugo'.
Charles West. Charles West was 33 in The Mystery Girl as 'Chester Naismith'.
Winter Hall. Winter Hall was 46 in The Mystery Girl as 'Prince Sebasatian'.
Mayme Kelso. Mayme Kelso was 51 in The Mystery Girl as 'Merecedes Thackery'.
J. Parks Jones. J. Parks Jones was 28 in The Mystery Girl as 'Ferdust'.
William C. deMille. William C. deMille was 40 in The Mystery Girl as 'Director'
Marion Fairfax. Marion Fairfax was 43 in The Mystery Girl as 'Writer'
Charles Schoenbaum. Charles Schoenbaum was 25 in The Mystery Girl as 'Cinematography'
George Barr McCutcheon. George Barr McCutcheon was 52 in The Mystery Girl as 'Novel'