Continuity: When Lucy is going through Peter's things at her apartment, she finds a can of cat food that has a smooth top and requires a can opener to open. In the next scene, when she goes to his apartment to feed the kitty, she opens the cat food by pulling off the top, like the can has a pull top.

Continuity: In the Christmas family picture scene, the camera seen in Elsie's hand is a Brownie camera(35mm size). When picture is actually taken, she uses a flat type(110 size film) camera with a tall flash on it.

Factual error: When Lucy jumps off the platform to save Peter, and is trying to wake him, the oncoming train blows its whistle. However, the L-trains/subways in Chicago do not have whistles like ground locomotives do.

Continuity: While Jack and Lucy are walking along the waterfront, she tells him that he '...just stepped in doggy poopie.' There is a long shot of the couple as Jack looks at his feet, and the sidewalk is spotlessly clean where they just walked.

Audio problem: In the scene where Lucy first enters Peter's hospital room, you can hear a respirator, and he is not hooked up to one. Also, the respirator noise is much faster than an unconscious human should be breathing.

Continuity: When Lucy and Jack are moving the couch into Peter's apartment, Lucy gets bumped and falls into a table, knocking over a vase of flowers. (This table and vase are located directly below a mask on the wall.) Earlier in the film, when Lucy enters Peter's apartment for the first time (to feed the cat) we see her slowly entering the living room in the same area where she later falls - the mask is there, but the table and vase of flowers are not.