Suzy Delair is the eponymous songstress, married to her unassuming accompanist "Maurice" (Bernard Blier). Now she is from a grittier background than her well-to-do husband, and she is ambitious - so when he catches her eying up elderly, and rather seamy, businessman "Brignon" (Charles Dullin) he loses his temper. When he subsequently discovers that she has gone to meet him, "Maurice" heads to his home with blood in his eyes. Thing is, when he gets there the corpse is all ready and waiting for him. Whodunit? Well that's down to the ferret-like skills of "Insp. Antoine" (Louis Jouvet). The plot thickens when both "Jenny" and "Maurice" attempt to fool the policeman with palpably fake alibis and the only real clues might lie with their neighbour "Dora" (Simone Renant) who also has some skin the game - but of the amorous nature. It's a complex and engaging thriller this, with lots of red herrings - some obvious, some subtle. The characters - especially "Dora" play well to the mystery of the thing and by half way in, the death of the old reprobate is secondary to the intrigue of who did what to whom and, more importantly, why? Jouvet is on great form as the curmudgeonly and fastidious detective and as the pace of his investigations gathers, the temperature of the whole thing raises nicely to boiling point. The photography is at times moody and sexy, and the settings all contribute well to a superior film noir that I thoroughly enjoyed watching.