Philip quickly comes to regret volunteering to be a witness in a murder trial.

A megalomaniac dictator, in charge of a former colony, installs a nuclear bomb in its London Embassy. He threatens to set it off, unless a huge ransom is paid. The question for the government is whether he will set it off anyway?

An ex army officer is charmed by a young woman (herself the daughter of a soldier) into joining the 'ban the bomb' movement, much to the surprise of his family.