Continuity mistake: In the very first scene, a black car pulls up behind the red car. As the car swings round, only one barrel is visible from the long shot. When it cuts to the red car's POV looking towards the car pulling up, there are now two barrels visible, one very close to the red car. (00:02:00)
Continuity mistake: When Mrs. Hess gets off the plane to Chicago, in a wideshot as she places her bags down, her scarf hangs out of the bag, yet in the closeup of her taking out the scarf it is tucked in the bag. (00:06:15)
Continuity mistake: When Alex is making his project tip the fishfood into the bowl, between shots the goldfish in the bowl switches sides. (00:10:40)
Continuity mistake: Alex puts the present down to take off his hat and scarf, by the front door. Between shots the present moves a few inches closer to the bag next to it. (00:11:00)
Continuity mistake: In the scene where Stan is bouncing his basketball, Alex's grasshopper is crawling around on the floor. Notice the bug is a brown type of a color and then when Stan squishes the grasshopper it is green on the bottom of the basketball. (00:12:58)
Suggested correction: The "insides" of grasshoppers are comprised of green body fluids. A squished grasshopper - brown or green - will look similar to how it does on the basketball that was used to squish it in the movie. What is shown may not be the precise shade of green "blood", but it is a decent rendition.
Continuity mistake: Alex rings the bell to get his Mom's attention and the box's position changes between shots. (00:14:25)
Continuity mistake: Alex starts turning off Mrs. Hess' TV from the attic. The ornaments in front of the TV move between shots at least twice, in consecutive shots. (00:16:35)
Continuity mistake: At one point, the mother gets an audible page. When she looks at the display to see the number, you can clearly see that the pager is set to "silent." (00:29:20)
Continuity mistake: One of the criminals almost gets run over by Alex's mother while running with the dog. As she leans down to say "have a nice day," she places her hand on the roof of the car. The shot turns to Alex's mother, and the criminal's hand can be seen placed on the window, not the roof. (00:33:40)
Continuity mistake: Alex places Doris (in his box) down on the table in the attic. The phone and remote control are neatly placed on the edge. However the shot changes to show Doris placed in between the phone and remote, which have changed places. (00:34:30)
Continuity mistake: When Alex revs the toy car backward to drag the rug over the stairs into the other room, we can see in one shot the rug only reaches the bottom of the second step, whereas in the next shot of the car coming down the steps, the rug is now further down and you can see that a ramp has been put under it so the car does not fall over. (00:36:15)
Continuity mistake: The pile of clothes that falls onto the remote control car changes between shots. The hamper turns over as well. (00:37:35)
Continuity mistake: When Beaupre is approaching the pile of clothes that has the remote control car under, Alex rushes to the attic window and uses his remote control to turn the TV on in that house, to stall Beaupre. There is an item on top of the TV and in front of it too. These two items disappear as Beaupre approachs the TV. (00:38:00)
Continuity mistake: When one of the criminals confirms her position as "4th house, moving to the alley," the shot moves to Alex running from one window to the other, with nothing in his hands. He goes to push open the window and the shot changes again. Alex now has the car remote control as the window opens. (00:42:55)
Continuity mistake: When Alex gets his remote control car back, he lifts up the viewfinder of the camcorder, then pushes it back down and lays his hand on it. Then he opens the tape compartment of the camcorder, which is empty, and in this closeup the viewfinder is back to pointing upwards. Then in the next wideshot it is pushed back down again and Alexs hand is back on it. (00:45:10)
Continuity mistake: Alex opens the closet to get his mum's coat, and the big red boxing glove springs out. He then picks up a black pole from the floor in a closeup ... which wasn't there in the previous wideshot. (00:56:30)
Continuity mistake: When the villain with the long hair is being electrocuted by the wire outside the front door, in a close up shot his ski pants are on fire, then in a further away shot, they are not, then in another close up they are on fire again. (01:03:05)
Continuity mistake: After the trunk of books has fallen on Beaupre and Unger, Unger leans upright and has a blue book on his chest. When it cuts the book is light brown. (01:06:30)
Continuity mistake: When Mr. Beaupre takes the control car apart, he holds the bottom of the car which has the wheels on it in his left hand, and the top of the car in his right hand. The shot changes and the two parts of the car have swapped over into the other hand instantly. (01:25:45)
Continuity mistake: Mr. Beaupre is talking to Alex in the garage, and Alex walks backwards away from him, he nearly touches the wooden shelf behind him. When it cuts to a wideshot Alex is now much further away from the shelf, and when it cuts to another closeup he once again walks back into the shelf. (01:29:16)
