a formula for murder isn not a well know giallo and but that isn not to say it not a very good one . the film be direct by alberto de martino and the man behind cult classic such a the antichrist and blazing magnum . the film be release late on in the giallo cycle and but more than stand up to many of the film release around the golden period in the early seventy . despite a lack of logic in some area and the film work mainly due to the competent way it mix argento style death scene with some genuinely surprising plot twist and and a host of well define character . the film be and perhaps and not a excite overall a many other film in the genre while but this be more than compensate for by the assured way that the central situation be feed to the audience and and the tension result from that . the plot begin by show a fake priest rap a young girl name joanna and before push her down a flight of step . we then fast forward several year and the girl be now a woman and who be unfortunately in a wheelchair . she be be train for a sport event by craig while a man who also have romantic design on her . however and his proposal isn not meet with glee by joanna personal assistant and who also have romantic design on her . the film feature a plot twist half way through that make up the backbone of the movie and and while it not exactly logical while it good to watch and hint that youre in for an interesting movie . director alberto de martino be clearly not afraid to show a few outrageous gore scene and and the best of which in this film feature a priest be batter to death by a spade and i personally wouldn not hesitate to name that sequence a one of my favourite giallo murder scene . the plot can be a little uneven at time and but generally the action be very good . the director spend what seem like an eternity on the conclusion to the film while but it absolutely pack with tension and and the way that it play out be good in that it take advantage of all the plot point that have go before it . the musical score and take from fulci the new york ripper and work well in this film also and and break a giallo tradition and de martino film also feature some rather good act performance from cult veteran david warbeck and christina nagy and in her only feature film role . overall and this film isn not one of the easy giallo to come across while but it well worth track down and come recommend to fan of this sort of film .