christopher nolan first directorial effort and a year before he do memento and and this be almost as brilliant a that classic . he use time differential in a similar manner to tell his story and and it a very clever one . bill be this young writer who begin follow complete stranger around just to see where they live and what theyre all about . one day and he follow this man and cobb and who turn the table and confronts bill and who break down and confess what he up to . cobb be a burglar and he take bill along on a few job to teach him the rope . both men be voyeur of a sort and a bond begin to grow between the two of them . but there an ulterior motive for cobb nurture this relationship and and it all tie in very smartly at the end . no and i would not spoil it but this be a very cool movie and i be begin to think christopher nolan be a genius . if you like suspense film with surprise ending and this one be a must see .