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The Unknown Quantity

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.

Plot

A profiteer's son falls in love with one of his father's victims and secures the acquittal of her brother who was falsely accused of murder.

    More details

    author
    director Thomas R. Mills
    keywords accused of murder falsely accused
    publisher Vitagraph Studios
    theme short