Themes and Plot Devices in The Films of Alfred Hitchcock - The Wrong Man or Wrong Woman

The Wrong Man or Wrong Woman

Mistaken identity is a common plot device in his films.
North By Northwest - Roger Thornhill (Cary Grant) is mistaken for George Kaplan, a non-existent CIA agent.
The Wrong Man - Henry Fonda is mistaken for a criminal.
Vertigo - The film revolves around Scottie Ferguson's investigation of the false Madeleine Elster's real identity.
The 39 Steps - Richard Hannay, the main character, is unjustly accused of murdering a woman, a spy by the name of Annabella, AKA Ms Smith.
Frenzy - The protagonist is thought to be the notorious Necktie Killer due the circumstances he finds himself in.
Saboteur - Barry Cane is framed by a saboteur named Frank Fry for an aircraft fire.
Secret Agent - The two main protagonists kill the wrong man, believing he is the German spy they are looking for.
Shadow of a Doubt - Uncle Charlie (Joseph Cotten) is the real killer of the Merry Widow murders, but the police accuse a dead man from a different state. Only he and his niece (Teresa Wright) know the real murderer.