Other mistake: With power out Magnum somehow lights the gas stove with the knob, which is electric. Should have used a match. (00:26:40)
Character mistake: The party is supposed to be "One of the premiere social events of the season", but the only people invited (Higgins knows for sure who is gonna come, so it's not like there's low attendance because of the weather) are a Prince from a fictional European state nobody knows about with his commoner wife, the editor of a poetry magazine that needs Robin's funds to survive, a sports star and Robin's accountant. 5 people in total, already all in Robin's pocket, and nobody else in attendance. While you could say that having royalty and a golden glove winner is certainly noteworthy, those people don't meet anyone else. Hardly a 'social event'. (00:04:00)
Visible crew/equipment: At the airport, when Magnum presses Higgins to tell him all about Soo Ling, it cuts to a wide shot as the two start walking, and three tape marks (one black, two white) are visible on the floor behind them. (00:43:50)
Visible crew/equipment: Magnum urges Father Paddy and Faulkes to figure out who could have benefited by stealing the relic. In the following shot of the tour guide talking to the tourists, as she says, "as the ashes are no longer there, the church was a little out if our way," her chalk T-mark is visible on the ground, at her feet. (00:41:00)
Visible crew/equipment: When Higgins places Anne Boleyn's crown in the box, just as he walks over to the hidden wallsafe, not only is a black T-mark is visible on the floor, the elegant bar table is raised on two small tacky wooden crates, in order to be taller in the following shot while Higgins pours drinks. (00:30:15)
Visible crew/equipment: When Rick and TC are boarding up the dining room window, the actor's white tape mark is visible in the floor, between their feet. (00:36:30)
Visible crew/equipment: When Magnum and Tracy are in the Ferrari after their fake date, Magnum mentions being reimbursed for dinner and breakfast, and in the shots facing the windshield the device (to secure a side camera) over Tracy's door is visible. (00:19:40)
Visible crew/equipment: When Magnum and Higgins go to the kitchen to boil water, for a spot of tea, a white tape mark is visible in the floor, near the sink. (00:26:15)
Visible crew/equipment: While Magnum argues with Higgins about the planned fundraising tours, Magnum gets a crossbow from the bedroom, and when they both head to the kitchen area the three white tape marks are visible on the step/floor. (00:12:20)
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)
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: When Higgins goes after the tow truck towing the Audi, it then cuts to Magnum pulling up to Maynard's trailer, and the reflection of crew, lighting, and equipment are visible on the surface of the Ferrari. (00:09:25)
Basket Case - S3-E14
Visible crew/equipment: After Magnum annoys Higgins with the bouncing basketball he asks if the uniforms have arrived, and as Higgins starts walking the white T-mark is visible on the floor in front of the chalkboard. (00:08:55)
The Arrow That Is Not Aimed - S3-E13
Visible crew/equipment: When Magnum goes to the souvenir shop, just as he starts to tell the guy he's interested in Japanese pottery, a black tape mark is visible on the floor. Then when Tozan starts going after the guy with his sword, the black T-mark is becomes visible as well, and Tozan stands at the tape mark and the guy stands at the T-mark. (00:31:40)
Visible crew/equipment: When Magnum leaves the guesthouse, he tells TC and Rick that all he wants to do is, "Have a little drinkipoo and watch some telly." Then it cuts to Magnum inserting Wilson's tape, and there are multiple black T-marks visible on the floor, all around the room. (00:22:45)
Visible crew/equipment: While Karen is packing up her car Dr. Jorgenson walks over to talk to her, and he begins by saying that he had spoken to her friend. Just as Karen says, "Thomas," in this shot we can spot something covered with black cloth and tape, presumably the boom mic, hovering low between them. (00:25:50)
Visible crew/equipment: After Magnum deliberately makes a threat against the reporter on the beach, when it cuts to the estate Magnum walks over to Rick who's talking about the union guy, and the white T-mark is visible on the grass where Magnum had been standing. (00:18:45)
Visible crew/equipment: While Karen is being harassed by reporters, Magnum drives up then rushes over to her and they hug. When the two walk toward the building all the reporters follow, and three T-marks are visible on the ground. (00:07:50)
Almost Home - S3-E10
Visible crew/equipment: When Magnum follows Maggie into the NIH break room to convince her to get the court martial transcripts, the actor's black T-mark is visible on the floor beside the cabinet with the coffee maker. (00:37:25)
Almost Home - S3-E10
Visible crew/equipment: After Bridget overhears Mrs. Tamura telling Magnum about her relationship with Bridget's father, when Magnum drives up to the house and gets out of the car, the white T-mark is visible on the ground, where Higgins stands. (00:20:45)