Alfred Hitchcock’s 1960 film *Psycho* continues to be a cinematic landmark sixty-six years after its release. The black-and-white thriller fundamentally altered the landscape of horror filmmaking. *Psycho* also revolutionized Hollywood marketing strategies with its innovative promotional campaign. The film’s impact extends to popular culture, notably changing perceptions surrounding everyday objects like showers. Its unexpected plot twists and shocking violence were groundbreaking for the time. *Psycho* remains a significant influence on the horror genre and a case study in effective film promotion.