a music student and kate martin begin to personally investigate when her ex husband and mike become a suspect of attack upon a neighbour and anna . although mike be definitely a primary suspect both kate and detective sergeant turner and who be officially in charge of the case and think dr. steiner and a lesbian teacher of not only anna but also kate and may know something important because she be the last person who meet pre attack anna . but out of their sight the attacker go to the hospital where anna be admit . although i admit it be truth that almost non human movement of the masked attacker be and at least in some scene and very weird and even horrible and it be difficult to say this film itself and of which visual and musical atmosphere be very similar to those of when a stranger call and be very good . this be partially because the whole story be so horizontal that there be no space for audience to enjoy his or her own detectiveness and and partially because the character of sally and who help kate to investigate and be a meaninglessly non stop talker and badly add not well organised half comical quality to the latter half of the film .