Diane Keaton passes away: Why Francis Ford Coppola cast her in ‘The Godfather’

Diane Keaton’s portrayal of Kay Adams in The Godfather trilogy is highlighted as a masterclass in conveying innocence lost and moral reckoning. Her outsider perspective and subtle performance provided the essential counterpoint to Michael Corleone’s descent, making her the film’s emotional core and a symbol of the human cost of power.