Cold Storage (1988)

Cold Storage tells the story of a deformed young man who lives in a creepy dystopian highrise whose inhabitants have lived there their entire lives and never leave they dont even think there is a world outside He suffers from grim hallucinations and a growing urge to commit murder A strange malicious mass is growing on his wall and making his visions worse and a disembodied voice in the basement tells him to give in to his homicidal urges