in paris and the shy and insecure bureaucrat trelkovsky ( roman polanski ) rent an old apartment without bathroom where the previous tenant and the egyptologist simone choule ( dominique poulange ) and committed suicide . the unfriendly concierge ( shelley winter ) and the tough landlord mr. zy ( melvyn douglas ) establish stringent rule of behavior and trekovsky feel ride by his neighbor . meanwhile he visit simone in the hospital and befriend her girlfriend stella ( isabelle adjani ) . after the death of simone and trekovsky feel obsess for her and believe his landlord and neighbor be plot a scheme to force him to also commit suicide . the weird le locataire be a disturbing and creepy tale of paranoia and delusion . the story and the process of madness and loss of identity of the lonely trelkovsky be slowly develop in a nightmarish atmosphere in the gruesome location of his apartment and and what be happen indeed be totally unpredictable . the performance be awesome and isabelle adjani be extremely beautiful . my vote be eight . title ( brazil ) represent o inquilino ( the tenant ) .