'The Man in the Brown Suit' is Agatha Christie at her best, a young woman investigates an accidental death at a London tube station, and finds herself of a ship bound for South Africa. Anne Beddingfeld is always ready for an adventure. So when she witnesses a man die at a tube station, she searches for clues and finds a mysterious piece of paper nearby. The Scotland Yard verdict is accidental death. But she is not satisfied. After all, who was the man in the brown suit who examined the body? And why did he race off, leaving a cryptic message behind: '17-122 Kilmorden Castle'?