"Appointment in Samarra" is a short story by John O'Hara that explores themes of fate and inevitability. The narrative follows a wealthy man named Jim Willow who attempts to escape his fate after encountering Death in a marketplace. Despite his efforts to flee to Baghdad, he ultimately meets his destiny in Samarra. The story highlights the futility of trying to avoid one's fate, as Jim's actions only lead him back to where he started. Through its simple yet profound plot, "Appointment in Samarra" illustrates the idea that no matter how hard one tries, certain events are unavoidable.