Sapphire

Sapphire (1959) is a mystery, crime, thriller directed by Basil Dearden rated 7.0/10.

Two Scotland Yard detectives investigate the murder of a young woman of mixed race who had been passing for white. As they interview a spate of suspects -- including the girl's white boyfriend and his disapproving parents -- the detectives wade through a stubbornly entrenched sludge of racism and bigotry.