DVDs & Films Forum - Film title help please - Page 1

hi guys,iv been driving myself mad trying to remember the title of a film i saw years ago,think mid-late 80s

was about a woman renovating a house or appartment and hiring an architect,he built some sort of false walls in the house and he lived inside them and watched the woman,i think he used to come out via a swivel mirror in the bathroom

thanks guys 8)