 CONT: At the end of the film, when Marty is back in his house but  everything has changed, his mother is asking him if hes going to  the lake with his girlfriend. There are two shots of her, one before  she asks Marty the question, and one after. In one shot, she has a  teacup and saucer in her hand. In the other shot, the teacup and  saucer are on the table.