Six people reunite to remember the beautiful Rosemary Barton, who died nearly a year before. Among them are the loving sister, the long-suffering husband, the devoted secretary, the lovers, and the betrayed wife. None of them can forget Rosemary.

But did one of them murder her?

Colonel Race of the British Secret Service, a friend of Hercule Poirot, is on the scene to investigate. As secrets unravel, the truth becomes a tangled web of intrigue and suspense.