Continuity mistake: Magnum sits on the couch's arm, by one of the sisters who is holding Higgins' book in her lap. On her lap, under the book, there's the handkerchief she used when she was having tea. In the closer angle, there's no hankie, while Madge's is open wider. (00:18:20)
Continuity mistake: Higgins mocks "Tommy", who in close-up rips the page of the notepad where he scribbled down the partial license plate. In a wider angle a few seconds later into the verbal exchanges he rips the page again. (00:18:05)
Continuity mistake: After the garage fiasco, Magnum sits down with the ladies who patronize him. During the scene, the sunglasses retainers run to the inside or the outside of the shirt collar, depending on the camera angle. (00:13:05)
Continuity mistake: Magnum escorted the two old ladies at the Fointanbleu Residence. The one in red, Madge, has her hand on Jeanie's arm when she says they were actresses, but she kept her hands to herself in the previous shot. (00:07:25)
Continuity mistake: Magnum is at the old ladies' residence and is talking with the card collector. In the close-up of the baseball broadcast, the object on top of the TV are gone. (00:08:45)
Continuity mistake: Magnum creates a Rodin-esque stack of beer cans. His store manager lambasts him, and when they are looking at his creation, it looks different already - the can he put on top as finishing touch is missing, immediately noticeable. (00:02:15)
