The Unknown Quantity

The Unknown Quantity (1919)


  • Genre: Drama
  • Release Date: 1919-04-14
  • Runtime: 0h 50min
  • Language: No Language
  • Production Company: Vitagraph Company of America
  • Production Country: United States of America
  • Director: Thomas R. Mills

Trailer

Summary

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.

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  • Corinne Griffith

    as Mary Boyne

  • Huntley Gordon

    as Dan Kinsolving

  • Harry Davenport

    as Septimus Kinsolving

  • Jack McLean

    as Sammy Boyne

  • Jack Ridgeway

    as Thomas Boyne

  • F.R. Buckley

    as Peter Kenwitz
Directing Thomas R. Mills Director
Writing G. Marion Burton Writer
Writing O. Henry Story

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