Mr. Todhunter lived an ordinary life in an ordinary bachelor's flat in London. He took tea at the same time every day and his habits were totally predictable. Until he learned he had only months to live—and decided to make one dramatic last gesture...to rid the world of the worst person he could find.

But once the deed was done, something quite unpredictable happened. An innocent man was convicted of the crime, and it was up to Mr. Todhunter to prove himself guilty of murder.