Continuity mistake: In the first scene after the opening credits, when the woman approaches the very Londonian chap greeting him with "'allo ducks", extras in the background don't transition between one shot and its reverse. (00:02:30)
Continuity mistake: Higgins is interrupted in his reading of Lord Byron's "So, we'll go no more a roving" by distinctly un-African music. As it happens, the book in his lap changes angle entirely in his lap. (00:06:15)
Continuity mistake: Higgins is still awake and Magnum sits on the couch with a glass of milk and a cookie. Between shots, the glass fills up - initially it was at the level of his middle finger, afterwards it moved up above his index. (00:29:20)
Continuity mistake: Rick gets KTFO by the mace being thrown at him. He collapses unconscious on the carpet that makes a noticeable hump, and his arm is past the pillar. Magnum comes to his rescue, and Rick is still out but the carpet straightened itself and Rick's arm is by his body. (00:32:30)
Continuity mistake: At the end of the episode, Thomas is sitting by Higgins that is playing Pac Man. TC arrives and Magnum stands up. There are two towels on the wall, and they are one on top of the other not overlapping by about 3 inches. By the time TC is in the water with Magnum, they are stacked perfectly. (00:46:30)
Continuity mistake: Marisa during the movie gives Thomas an appointment. When she says "That's where I hid the papers." the woman in the background is leaning against her left hand. The chat continues in the next shot but the woman's position is different and gone is the hand. (00:30:20)
Foiled Again - S3-E7
Continuity mistake: Higgins is staring at the window after his dream. Magnum calls for him and casually walks into the study. Something changed in this second part of the scene; the black cap that will be a conversation point later is now placed across the lid and main case of the foil. In the opening view, it was entirely on the lid and wasn't on the frame. (00:03:05)
Foiled Again - S3-E7
Continuity mistake: When the contestants are announced (in a thick French accent), it is said that Higgins fences from the right position. Rick later states, accusing Higgins, that "A lot of people heard Higgins ask for the right side." When the odious rival shows up, he says "You asked for the left position?" to which Higgins nods. (00:11:50 - 00:13:00)
Foiled Again - S3-E7
Continuity mistake: Before the fencing match, Higgins' old belle Velma Troubshaw approaches him and they chat. During this chat the people behind Higgins are different from shot to shot, matching only the views from the same angle. (00:12:20)
Foiled Again - S3-E7
Continuity mistake: Higgins is dressing up for the foil duel. He puts his right glove on when Velma apologizes, and when he replies that she has nothing to apologize for...he's putting the glove on again. (00:12:25)
Foiled Again - S3-E7
Continuity mistake: Magnum visits Assistant District Attorney Carol Baldwin who is having her lunch break outside. She has a paper towel around the yogurt container she's eating from, but when the camera is to her left the napkin reaches the rim of the container, whenever the camera is to her right it's an inch lower. (00:21:45)
Foiled Again - S3-E7
Continuity mistake: After hearing from Magnum about Velma Troubshaw's conversation with the DA, Higgins shows up at her mansion and knocks at the door. The shadows of the foliage (and the shadow of John Hillerman himself) change noticeably at the cut. (00:37:00)
Foiled Again - S3-E7
Continuity mistake: When Magnum confronts the real culprit, in the couple of POV shots they are not wearing the gloves they have in the rest of the fight. (00:43:40)
Continuity mistake: The first time we see Mr. White Death in the ring, he gets pushed into the corner by his opponent but he shoulder-tackles him to the ground. So when Rick talks to Harry, makes sense that both wrestlers are rolling on the canvas. Less sense though that after they cut to footage of the two wrestlers trading blow standing, Rick and Harry are still talking with the two big guys downed and tumbling around. (00:04:40)
Continuity mistake: Magnum chirps "Hey, we can talk about this!" as a guy grabs him from behind and Rick is on the ground holding a hand on his cheek. But in the close-up, Larry Manetti's hand is noticeably lower on the jaw. (00:06:20)
Continuity mistake: During Earl's story about the dead sumo wrestler, Ernst Borgnine and Tom Selleck's hands have inconsistent positions between cuts. Magnum's hands hold the chopsticks at or well below the table level, and White Death's hand is closed first, then open. (00:09:20)
Continuity mistake: Once Higgins sends away Zeus and Apollo, Magnum looks down briefly at his own feet, which are one in front of the other. A close-up on Higgins happens then, and then another on Magnum, who only then is looking down at his feet and realizing he's standing on the prized soil, and in the following close-up steps away from it, having both feet together at the same level. (00:16:00)
