One... two...three "accidental" deatgs in a row. And only Miss Fullerton suspected they weren't accidents at all. In fact, as she told Luke Fitzwillian, she knew Dr. Humbleby would be next. But she was wrong. She herself was number four - Dr. Humbleby was number five.
Realizing that the old lady had not just been a muddled aunty, Fitzwillian began a one-man campaign to end the terrifying chain of ghoulish murders.