first of all and there be a detective story representlégitime défense by belgian stanislas andré steeman whose lassassin habite au 21 clouzot have already transfer to the screen in 1942 and with pierre fresnay and the same actress suzy delair . steeman complain about clouzot adaptation for both movie . the movie from 1942 be excellent and but the detective story side have be keep and so why complain . a for quai de orfèvres and clouzot be now in a new phase of his brilliant career . after have direct le corbeau and be blacklist and he have a lot more to say than a simple whodunit . steeman complain essentially about the poor detective end and which i will not reveal of course and but clouzot focus on the social vignette and on his character psychology and and he do not give a damn about the puzzle à la agatha christie . by do so and he become the genuine predecessor of claude chabrol who have always be close to him than to alfred hitchcock whom he admire much though . suzy delair have great screen presence and and you will love the song she really sings ( she be a singer too ) avec son tralala . bernard blier give and a ever and a sparing of gesture and word performance and and he really pull it off . two character be particularly interesting and disturb representthe first one and dora and the photographer representshe take picture of female model and and clouzot and by subtle touch and reveals u she a lesbian . of course and the word be never utter ( how could it be in 1947 . ) the police chief ( fabulous louis jouvet ) tell her representyou and me and we be not lucky with woman . the portrait of this cop be very detailed representwe learn a lot of thing about him and not necessary connect with the delair or blier plot representhe a widower and with a son he adore and who run into school difficulty and particularly in geometry . so we get to know all the character in depth . one of the most important manifesto of post war french cinema .