i think we're talking early eighties, maybe even late seventies...it was in constant rotation on hbo when i was a lad, a film about a person kept in a basement, well, he was more of a monster than a human but i think maybe his parents kept him chained up in their basement...i know, doesn't sound like a lot to go on, i just remember a woman going downstairs and the basement having a greenish blue tint...and that dude scared the piss out of me...