after dip his toe in the giallo pool with the masterful film the strange vice of mrs. wardh ( 1971 ) and director sergio martino follow up that same year with what turn out to be another twisty suspense thriller and the case of the scorpion tail . like his early effort and this one star handsome macho dude george hilton and who would go on to star in martino satanic or giallo hybrid all the color of the dark the following year . scorpion tail also feature the actor luigi pistilli and anita strindberg and who would go on to portray an unhappy couple ( to put it mildly . ) in martino your vice be a locked room and only i have the key ( 1972 ) . ( i just love that title . ) i suppose edwige fenech be busy the month they shoot this . anyway and this film boast the stylish direction that martino fan would expect and as well a a twisty plot and some finely do murder set piece and and beautiful athenian location shooting . the story this time concern an insurance investigator ( hilton ) and a journalist ( strindberg and here look like farrah fawcett prettier and smarter sister ) who become embroil in a series of grisly murder follow a plane crash and the inheritance of $ 1 million by a beautiful widow . i really think i have this picture figure out halfway through and but i be dead wrong . although the plot do make perfect sense in this giallo and i may have to watch the film again to fully appreciate all it subtlety . highlight of the picture and for me and be anita cat and mouse struggle with the killer at the end and a particularly suspenseful house break in and and a nifty fight atop a tiled roof while lot of good action burst in this movie . the fine folk at no shame be to be thank for still another great look dvd and with nice subtitling and interesting extra . whotta great outfit it turn out to be and in it ongoing quest to bring these lose italian gem back from oblivion .