Guy Edward Hearn was an American actor who, in a forty-year film career, starting in 1915, played hundreds of roles, starting with juvenile leads, then, briefly, as leading man, all during the silent era.

Her Bitter Cup is a 1916 American silent film directed by Cleo Madison. One of only two feature-length films directed by Madison, she also played the leading role, a fervent labor organizer who uses drastic methods to finance her cause of improving the miserable lot of the workers in a factory.