Goofs

When Jack's mother comes to visit Mary, you can see in the background what appears to be a little boy standing in front of a window. There is a rumor that this is the ghost of a little boy who died in the apartment in which the film was shot. This rumor is false, as the interiors were all shot on a sound stage in a movie studio. The "ghost" is actually a cardboard cut-out of Jack wearing a tuxedo. This prop appears later in the film, when Mary's mother comes to collect her. Some argue that "it's smaller" or "it's dressed differently", but close examination reveals that it really is the cardboard prop. See more