Anne Beddingfeld embarks on an adventurous journey following a cryptic clue after witnessing a man's death in the London Underground. Her investigation leads her aboard the Kilmorden Castle, where she encounters a diverse cast, including the mysterious Colonel Race and Sir Eustace Pedler. As Anne delves deeper, she unravels a complex plot involving diamonds, espionage, and betrayal, all while grappling with her own role in a dangerous international conspiracy. The Man in the Brown Suit by Agatha Christie is notable for introducing the character Colonel Race and for blending adventure with mystery, a departure from her usual detective narratives. The novel's backdrop, spanning from London to South Africa, and involving a conspiracy, reflects Christie's own global travels and personal experiences, particularly her 1922 promotional tour for the British Empire Exhibition.

This case laminate collector's edition includes a Victorian inspired dust-jacket.