So Dark the Night

''So Dark the Night'' is the story of a detective, Henri Cassin (Steven Geray) from Paris, who, while on a long overdue vacation, falls in love with innkeeper Pierre Michaud's daughter Nanette (Micheline Cheirel). She is a country girl with a jealous boyfriend. Nonetheless, the detective becomes engaged to her. Then, the night of her engagement party, the girl vanishes and later turns up dead. Cassin believes that the obvious suspect is Leon (Paul Marion (actor)), the old boyfriend, but soon he is also found killed. Soon after Mama (Ann Codee) receives a warning that she will be the next to die, she is found strangled.