Cast & crew
The Common Cause (1919)
Directed by J. Stuart Blackton Written by Ian Hay, J. Hartley Manners, Percival Knight, Anthony Paul Kelly
Cast
| Charles Stuart Blackton | Belgian Yorkshire |
| Louis Dean | German D.E.B. |
| Marjorie Rambeau | Prologue |
| Violet Heming | Prologue |
| Violet Virginia Blackton | Belgian Yorkshire |
| Lawrence Grossmith | Atkins |
| Huntley Gordon | Edward |
| Herbert Rawlinson | Orrin Sanderson |
| Irene Castle | Prologue |
| Sylvia Breamer | Helene |
| Philip Van Loan | Poilu |
| Effie Shannon | Prologue |
| Julia Arthur | Italy |
| Marcelle Carroll | Topless Girl |
Crew
| Otto Brautigan | Director of Photography |
| Ian Hay | Screenplay |
| J. Hartley Manners | Screenplay |
| Percival Knight | Screenplay |
| J. Stuart Blackton | Director |
| J. Stuart Blackton | Producer |
| Albert E. Smith | Presenter |
| Anthony Paul Kelly | Writer |