Inspector Blair, on leave in England, finds himself plunged into a murder mystery on the second day after his arrival. Blair's sister, with whom he is staying is the wife of Colonel Markham, newly appointed Chief of the Police of West Hamptonshire. The murder of Sir John Hamilton, president of associated chemicals, causes a tremendous stir in the sleepy little old English town of Barminster. As news of the murder spreads through the countryside, Blair forgets all about holidays, and goes after a solution of the mystery...