A bitter assistant foreign editor of a London newspaper commits murder in the newspaper office after being passed over yet again for a promotion.

During a convention, a visiting family takes a hotel room. The father and Mother get ready while the daughter leaves. The wife nagging pushes the man over the edge and he is determined to kill her after he makes her listen to his list of reasons she's been cruel to him. Meanwhile police try to talk him out of it, and watch him with a television camera across the street.