The Longest Pleasure

Hatred is the longest pleasure, and it is manifested in a particularly horrifying form when almost simultaneously in four widely separated parts of Britain there are calculated outbreaks of botulism. In each outbreak the source is traced to an infected tin of meat, and each tin was bought in one of the supermarkets of the same national chain. The Home Office suppresses news of the outbreaks to prevent widespread panic, and also calls in Chief Superintendent Masters and Chief Inspector Green of Scotland Yard, who rise magnificently to the challenge in an investigation that is technically absorbing and packed with suspense.