Themes - multiple personalities

From Alfred Hitchcock Wiki

• Jamaica Inn (1939) - Charles Laughton's "Jekyll and Hyde" charater
• Shadow of a Doubt (1943) - young Charlie and her Uncle
• Vertigo (1958) - Madeleine/Judy/Carlotta
• Psycho (1960) - Norman and his mother
• Marnie (1964) - who is Marnie?