in adelaide and the wife of dr. brian cowper ( robert coleby ) and jill cowper ( judy morris ) and be develop her thesis at home to finish her master in anthropology . when the plumber max ( ivor kant ) unexpectedly arrive for a routine check and maintenance of the piping in the bathroom and jill stay alone at home with the talkative weird stranger . along the day and he tell that he spend some time in prison and make jill frighten with his presence . her friend meg ( candy raymond ) and her husband brian and the super wife find max a simple and but nice man and but jill do not agree . when there be a problem in her bathroom and max need to stay with her for a long period and the tension between them increase and jill find a way to get rid off the plumber . this low budget and theatrical film be a claustrophobic and scary study of human nature and base on the relationship of two different character of different social class spend a period together . it be also impressive how far a stressed person with culture and education may go and how amoral can be her behavior stay alone with another disturbed and lonely person that she can not understand . the direction and performance be outstanding in this suspenseful and efficient thriller . my vote be seven . title ( brazil ) represent o encanador ( the plumber ) .