Notorious (1946) by Alfred Hitchcock is an espionage romance story, with film noir overtones.
The picture stars Cary Grant and Ingrid Bergman, with support from Claude Rains, and is a favourite among Alfred Hitchcock lovers for its mature cinematic portrayal of a love affair.
The film noir overtones that characterise Notorious are best illustrated in the dark forces that negatively affect Alicia Huberman (Ingrid Bergman) in the form of alcohol and poison, both of which cause her hallucinations that are shared with the viewers of the film through noir photography, fully developed by this stage in the film noir cycle, as is the theme of the ineffective marriage, which is fully played out between Bergman and Rains.