Continuity mistake: When Magnum encounters his secretary and he just won't let go of her hand, in the frontal views of Tom Selleck he has his fingertips curled, while in the reverse shots the fingers are straight and don't rise above the side of her hand. (00:19:00)
Character mistake: Bickering with his pretend wife after risking his neck with the falling crates, Magnums says "we can stop playing house, I can go back to being a private detective, which is exactly what I should have been in the first place." Magnum has a verbal tic during the series and he fiercely corrects everyone when they call him a private eye, or detective, as he goes only by "investigator" (the I in P.I, after all). He's using the wrong word here. (00:22:35)
Visible crew/equipment: While Magnum tries to eat the hotdog, Marsha hounds him about the "rancid, decaying animal flesh with harmful chemicals and additives." When Magnum agrees to let her fix something good, Marsha starts heading up the stairs and the white T-mark is visible on the floor, where she had been standing. (00:32:50)
Visible crew/equipment: After Rick and TC agree to the horrible terms, Higgins is "persuaded" to help them get out of jail. In the next shot at the docks, when Marsha parks in front of the trailer, multiple white tape marks are visible on the ground in front of the trailer door, then before they all leave, those white tape marks are now black tape marks and a T-mark. (00:39:50)
Other mistake: Marsha Mackenzie is supposed to be competent with certain aspects of men care; she comes from a wealthy family and she has been taking care of the men in her family all her life. And Magnum does show up at the Kamehameha club with a nicely done knot on his tie. When we actually see the actress tie that same not metaphorical knot though, it's very clumsy, crooked and differs in between shots (it's also done on an unbuttoned shirt).
Forty Years from Sand Island - S3-E17
Revealing mistake: After the savage beating, the two other prisoners go check out what happened inside the restroom. The take of Kirin Nakamura lying face down begins with the actor stretching his finger before he has to play corpse for a while not moving a muscle. (00:04:25)
Forty Years from Sand Island - S3-E17
Continuity mistake: In the flashback, the one who supports Mr. Nakamura's head does it with the thumb raised above a cone of shadow and clear of his chin in close-up, not matching the previous and following shot. (00:04:30)
Forty Years from Sand Island - S3-E17
Revealing mistake: Magnum usurped Higgins' desk while he's at the hospital. He is checking out of the article about Enoka running for Senate. If you look at the first article on the left, it begins with "The facts regarding the situation remain the same, state the authorities", the famous filler text that appears in dozens of props made by Earl Hayes Press. (00:16:35)
Forty Years from Sand Island - S3-E17
Continuity mistake: Magnum approaches the Nakamura house getting out of the car with light beige shoes. The young and pretty granddaughter of the deceased walks him around the corner, to her father. In the scene with Russell Nakamura, Nancy's Father, Magnum suddenly has dark brown moccasins, which you can see when he walks towards him and then away. And then when Nancy walks him back to his car, the beige shoes are back. (00:20:10)
Forty Years from Sand Island - S3-E17
Revealing mistake: When Magnum rolls slowly in pain after being hit by the first box, and then when he rolls quickly to 'avoid' the others, his lab coat appears to have protective padding; there's a rectangular shape sticking out. (00:21:25)
Forty Years from Sand Island - S3-E17
Continuity mistake: Magnum's wife makes him lie down again on the office couch. His tie runs down his left side with both ends when the camera is behind his head, one to the side and one straight in the other view. (00:23:20)
Forty Years from Sand Island - S3-E17
Continuity mistake: Magnum sits down with Saichi Goto leaving the girl on the pier. He asks him "what do you remember about 'em?", and holds his left hand with his right. Reverse shot and it's the other way around. (00:26:10)
Forty Years from Sand Island - S3-E17
Revealing mistake: When Higgins' wheelchair starts taking off and he cries "I say, MAGNUM!" you can see rise from the grass a thin line used to safely halt the chair when off camera. (00:28:05)
Forty Years from Sand Island - S3-E17
Other mistake: Hank Palmer appears in the closing credits as "Hank Sorenso", but his last name is pronounced by everyone (and logically so) as "Sorenson", and Rick says his first name is Fred. (00:31:00 - 00:48:00)
Forty Years from Sand Island - S3-E17
Continuity mistake: Nancy Nakamura steps away from Magnum telling him she "did not have to decide." Her hair is fully combed back. She is briefly out of frame, and Magnum walks back to her without her moving, but her hair is now cascading all over her shoulders. (00:39:00)
