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The Unknown Quantity was a 1919 American silent directed by Thomas R. Mills produced and distributed by the Vitagraph Company of America. It is based on the 1910 short story of the same name by O. Henry.
Original Release
04/14/1919
US Release
04/14/1919
Cast
| Name | Character |
|---|
| Corinne Griffith | Mary Boyne |
| Huntley Gordon | Dan Kinsolving |
| Harry Davenport | Septimus Kinsolving |
| Jack Ridgeway | Thomas Boyne |
| F.R. Buckley | Peter Kenwitz |
| Jack McLean | Sammy Boyne |
Directors
Writers
Cast
| Name | Character |
|---|
| Corinne Griffith | Mary Boyne |
| Huntley Gordon | Dan Kinsolving |
| Harry Davenport | Septimus Kinsolving |
| Jack Ridgeway | Thomas Boyne |
| F.R. Buckley | Peter Kenwitz |
| Jack McLean | Sammy Boyne |
