The Unknown Quantity (1919)
Mary Boyne, who made shirts at four dollars a week, had no place for love in her life - only despair and hate for the son of the man who had plunged her family into deepest distress. Peter Kenwitz loved Mary, but because he was a mathematician and a pessimist by trade, his love was as hopeless as her chance for happiness.
Director: Thomas R. Mills
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Corinne Griffith as Mary Boyne |
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Huntley Gordon as Dan Kinsolving |
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Harry Davenport as Septimus Kinsolving |
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Jack McLean as Sammy Boyne |
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Jack Ridgeway as Thomas Boyne |
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F.R. Buckley as Peter Kenwitz |
| Directing | Thomas R. Mills | Director |
| Writing | G. Marion Burton | Writer |
| Writing | O. Henry | Story |
