As Christopher Nolan's debut feature, it was designed to be as inexpensive as possible to make: scenes were heavily rehearsed so that just one or two takes were needed, thus economising on 16 mm film stock, the production's greatest expense, and for which Nolan was paying from his salary.
Without expensive professional lighting equipment, Nolan mostly used available light. Apart from writing, directing, and photographing the film, Nolan also helped in editing and production.
The Plot:
An older man listens to Bill's story about being a callow writer who likes to follow strangers around London, observing them. One day, a glib and self-confident man whom Bill has been following confronts him. He's Cobb, a burglar who takes Bill under his wing and shows him how to break and enter. They burgle a woman's flat; Bill gets intrigued with her (photographs are everywhere in her flat).
He follows her and chats her up at a bar owned by her ex-boyfriend, a nasty piece of work who killed someone in her living room with a hammer. Soon Bill is volunteering to do her a favor, which involves a break-in. What does the older man know that Bill doesn't?