The Black Secret
Moving stealthily in the background, always keeping their tracks well covered, the perpetrators of the terrible Black Secret conducted heir campaign with Michiavellian ingenuity.
Adventures of an American Secret Service-girl in search of an important German secret during the war.
- Year: 1919
- Country: United States of America
- Genre: Action, Adventure
- Studio: George B. Seitz Productions
- Keyword: gun, movie serial, lost film
- Director: George B. Seitz
- Cast: Pearl White, Walter McGrail, Wallace McCutcheon Jr., George B. Seitz, Henry G. Sell, Marjorie Milton