Any old movie which features manhattan as a backdrop is interesting to me. The Manhattan bridge and gritty side street make for a subtle character in the background. A violent rape by a stranger sends a pretty college girl into despair exposing the social inequalities of women in that era. But then she meets a desperate drunk who selfishly imprisons her in his basement apartment like a wounded kitten in hopes of being saved himself. As the story progresses, the uncomfortable occurrence of Stockholm syndrome comes in play. Yes, it's interesting to watch but pretty weird psychology in those days.