Continuity: Jeff has just fallen from the window and is lying on the ground injured. The detectives who broke his fall are kneeling next to him as Stella, the nurse, rushes up to help him. Lisa is still running over from the other building, but in an instant, she is sitting on the ground, her legs tucked neatly under her, with Jeff's head squarely in her lap as the nurse begins to attend to him.

Continuity: There's an oscillating fan near the ceiling that alternates between running and not running from one cut to another in one scene.

Continuity: When the nurse first visits Jefferies, his hands are separated. They jump together in the next shot when she places the thermometer in his mouth.

Continuity: The drainpipe running down the building where the Thorvalds live, the one between the living room windows and the bedroom windows of the block, becomes at least 1 foot (10cms) wide at least three times through the film, and changes to a gingery colour, almost as if it has become a plank of wood standing against the wall. It also has a pipe or something running into it in a couple of shots, just above the Thorvalds' bedroom window, but as this would be the "dog" couple's bedroom, there shouldn't be a pipe coming down from there. At other times the drainpipe just looks like an ordinary drain pipe. Even though we are not meant to be looking at anything but the activities through the windows, the drainpipe is very evident in many shots as the action frequently moves over it into the adjacent rooms. (Visible in the remastered video version and others.)

Continuity: In the scene where Miss Lonelyheart brings home a younger man, she slaps him on the left side of his face, and when he leaves and stands outside her door he rubs the right side as if it hurts.

Continuity: After James Stewart's second massage, he buttons once in the middle of his pyjama shirt. In the next shot the top button appears buttoned as well.

Continuity: When Jimmy Stewart is watching the couple in the next building, the wine glass behind him alternates between being almost full and almost empty in successive shots.

Revealing: In the shot of the helicopter hovering above the apartment building, the blue screen technique is needlessly revealed by the eratic and physically impossible movements of the chopper. This could have been avoided if the camera shooting the aircraft had been stationary. It appears, however, that it was a handheld shot.

Continuity: When a man carrying a big block of ice passes by the sculptress's backyard, we see her cat sitting on a chair next to her as she works on her "Hunger" sculpture. In one shot, the cat is facing toward the man, and in the next, it is facing away him when it gets up, turns around, and meows at him.

Continuity: James Stewart uses a camera flashgun to defend himself by repeatedly temporarily blinding Thorvald in the closing scene. The number of flashbulbs in the cardboard box drops by two between cuts as Stewart wheels himself back away from Thorvald.

Continuity: If you look carefully, you can see that the apartments of Miss Lonelyheart and the Thorvalds appear to be ridiculously small in depth.

Continuity: At the end of the movie, when Jimmy Stewart is hanging in the window, we can se that it's a stunt double.