Donald Mason is a married professor who wants to end a romance with one of his stidents. He stops by while she is babysitting. He tries to end the relationship, but she threatens to expose him. He kills her and leaves a witness: the screaming baby she was watching. Later, Mason runs into the infant in a carriage on the street. At the sight of him the baby screams and cries. Haunted by the child's screams, Mason gives himself up. Later, however, he discovers that the baby has only been around women his entire life. It screams whenever any man comes near.
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