The Unknown Quantity

Category: Drama
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.

Status: Released IMDb
Release date: 1919-04-14
Run time: 50 minute / 0:50
Director: Thomas R. Mills
Production Company : Vitagraph Company of America
Production Country: United States of America