When a new clue arises in a long-closed murder inquiry, Miss Silver fights to free an innocent manMarion Grey is growing used to the idea that her husband will never leave prison. After the horrors of a very public trial she is almost able to find relief in her resignation. But when new evidence suggests her husband may be innocent after all, she hires a professional—Miss Silver—to clear his name. It begins with a chance encounter on a busy train, when a friend of Marion’s meets a half-mad woman who claims to know something of the Grey case. With her is a man who disappeared during the trial, and may know something that could see Marion’s husband set free. Who is he, and where has he gone? To find out, the demure detective Miss Silver must track him down before becoming a victim herself.