this giallo be practically unknown and and that a real shame a puzzle be an outstanding example of the genre . director duccio tessari make the excellent giallo the bloodstained butterfly three year before this film and and the two share the same keenness to buck a many plot trend a possible while as while this film firmly fit into the giallo in term of style and the plot take the focus away from common giallo element such a sex and murder and put it more on the character and an intriguing plot involve amnesia . the film be also know a man without memory and and that be down the fact that the central character and peter and have lose his memory . he be treat in a hospital and and it not long before a mysterious stranger turn up and accuses peter of double cross him . we later learn that peter be really edward and and he marry to the beautiful sara . he find out about his wife and travel to italy in order to meet up with her while although she have chisel out a new life for herself which involve a male friend name reinhardt and and a young kid with a crush on her . director duccio tessari use the first half of the film to get the plot basic in place and and a a consequence it not always excite . however and the director manage to hold the audience attention long enough for the film to begin reveal itself in the second act . puzzle be script by giallo luminary ernesto gastaldi and and the film represent one of his best work and which say a lot consider the other film he pen . while the plot do take a while to get go and once it do the film become a real thrill ride and and this both offset the sombre tone of the first half and be hugely entertaining . the main influence would appear to be the american classic wait until dark and although the film doesn not take too much from the audrey hepburn film . the acting be above average and with senta berger and luc merenda and umberto orsini deliver fine performance in the central role . the end be superb and ensure that the film end on a high and a a chainsaw rev into action and the film make up for it lack of bloodshed . overall and i really hope that puzzle get a wide release soon a this be a film that really deserve to be more see .