Inspector Hardie investigates the double death of a wealthy married couple in Winchester. Owing to a war telegram, and no other evidence, it looks like a suicide pact. However, Inspector Hardie is not satisfied, and ends up taking a very long trip to Fort William in Scotland, where he discovers a mixture of truth and lies, deceit, and three further deaths. He returns to Winchester, where another murder is committed. Inspector Hardie solves the crime, without the advantage of modern scientific technology.