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Belle Bennett once more goes the martyred "Stella Dallas" route in the aptly titled Power of Silence. To ensure the future happiness of her son John Westwood, Bennett refuses to defend herself in a sensational murder trial. Only through the introduction of a diary as evidence is it proven that she is innocent of the death of her common-law husband Anders Randolf. After the trial, Westwood brings his mother home to live with him and his harridan wife Marion Douglas. Bennett's daughter-in-law resents the older woman's presence -- as well she should, for both Douglas and Bennett know full well that Douglas was guilty of killing Randolf in self-defence. Ultimately, Douglas realizes how much she owes Bennett, and the women share a tearful reconciliation.