Assignment Redhead (released in the US as Million Dollar Manhunt) is a 1956 British crime thriller, written and directed by Maclean Rogers. It is based on the novel Requiem for a Redhead by Lindsay Hardy.
The UK title of this film refers to the accordion-playing character central to the plot, Hedy Bergner, but as the movie is shot in black and white that is the only clue to the fact that she is supposed to be a redhead!