This movie itself is a nightmare:I dare you to stay till the end.The story is so muddled and the treatment so dull that one wonders why money can be spent to produce such duds.The late Pierre Clementi,dressed as a chauffeur during the whole film ,is chasing a girl who was a famous virtuoso and who disappeared after a car wreck.Flashbacks here and there tell us she had a brother ,a musician too,who died in the accident( or killed by the villains?)Clementi kills all those who are unfortunate enough to hang around the cafe where the heroine accompanies a chanteuse on the piano(played by a true chanteuse,Monique Morelli:her song is the only good moment in the whole flick).The screenplay includes Belgian comic strips ,educated barflies,pimps and hookers,unscrupulous producers(?),and fills its quota of blood (but sex is almost absent).