Temper.

Driven from home because of his father’s temper, 20-year-old Frank Bradbury struggles to control his own strong emotions. When a schoolmate harasses his sweetheart, Rose Claybourne Frank attacks him and is expelled from university. After becoming engaged to Rose they return to his home, seeking his father's consent for their engagement. Their mothers are hopeful for reconciliation, but Frank’s father is enraged. Frank arrives while the father is attacking his mother and Frank kills him with a paper weight. Brought to trial he is acquitted on the grounds of justifiable homicide and Rose and he marry.