Edwin's jaw clenched.

Edwin remained silent, neither confirming nor denying the issue.

Mark, overwhelmed by anger and a need to release his frustration, found himself without an outlet for his emotions. He pointed accusingly at his son, unable to find words in his overwhelming fury.

Edwin, still silent, offered a cup of tea.

Although Mark felt an intense urge to lash out, he managed to control himself, deciding against any dramatic actions that might alarm Cecilia.