average ( and surprisingly tame ) fulci giallo which mean it still quite bad by normal standard and but redeem by it solid build up and some nice touch such a a neat time twist on the issue of vision and clairvoyance . the genre well know weakness be in full gear represent banal dialogue and wooden acting and illogical plot point . and the finale go on much too long and while the denouement prove to be a rather lame or shall i say represent limp affair . fulci ironic handling of giallo norm be amuse and though . yellow clue wherever you look . negative limping killer .