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)
Don't Eat the Snow in Hawaii - S1-E1
Continuity mistake: When Magnum drops the ring out of the envelope, nothing is near it as it's shaking. In the close up shot, it's next to keys. (00:44:20)
Revealing mistake: One of the party guests opens the door of the fridge and you can see behind the set instead of looking into the fridge. (00:32:40)
Visible crew/equipment: By the car exit of the Mokihana, both in coach Lum's car and in the Ferrari you can see the reflection of people standing by to film the scene. (00:44:10)
Continuity mistake: The opening of the show starts with Magnum driving off with the iconic Ferrari; however it has a license plate number, 56E-478, which is not the one seen in 99% of the show. It comes from the pilot episode, where the vanity plate ROBIN-1 had yet to be introduced.
Continuity mistake: Magnum comes back to the beach after some surf ski, where the prince struck a 'deal' with Ed Russler. Magnum's shirt is wet in two completely, and that's not a understatement, COMPLETELY different ways before and after John Saxon approaches. (00:28:30)
On the Fly - S7-E15
Visible crew/equipment: When Magnum successfully lands the plane he starts shouting about the brakes, then in the following shot of "Mac" lying in the hospital bed, the black T-mark is visible on the floor, in front of Higgins. (00:44:25)
On the Fly - S7-E15
Visible crew/equipment: While Higgins is standing beside TC's hospital bed there's a boom pole and mic hovering low in the area of Higgins' legs, and it can be seen in the two wide shots from behind Higgins, especially when Rick mentions the noontime news. (00:06:40)
On the Fly - S7-E15
Visible crew/equipment: After Magnum realises TC has been shot, in the following wide shot with TC in the hospital bed, two black T-marks are visible on the floor, where Magnum stands, then a third T-mark is visible on the floor closer to the TV. (00:05:40)
Visible crew/equipment: Inside Benny's glasses when he is taken back to the Estate is the reflection of the set light screen. (00:39:10)
Continuity mistake: Rick tells (and shows!) Magnum that he's writing "a recipe for Veal Marsala for my mother back in Chicago." But the key plot element of 4-4 "Distant Relative" was that Rick raised his sister by himself, because Chicago was "a tough town to grow up in without any parents."
Other mistake: Fun gag but does not make sense; Magnum has a prolonged conversation at the bar (not a random brief chance encounter) with Lou Whitaker and Alan Trammel, and he, a huge Tigers Fan who in other episodes proved to be able to recognize obscure players from other past teams, needs the bartender to tell him who they were. (00:27:30)
Continuity mistake: For the first episodes (minus the plot), the opening of the series features the Ferrari with two different license plates. The opening shot shows the ROBIN-1 vanity plate that is in every episode but not in the most well known version of the opening (with the iconic Mike Post theme music used in all the other seasons), and the following shows the license plate from the pilot.
Other mistake: Twice in the episode it is explicitly said that Magnum's phone has been disconnected, and that Higgins checked with the phone company. Yet at the end, it turns out 'the lads' chewed on the cable. Surely the phone company wouldn't tell the estate manager that the line has been disconnected for billing problems (so, a well determined administrative issue with proper paperwork done) when it's a wiring problem.
The Ugliest Dog in Hawaii - S1-E8
Continuity mistake: Inside his study when he talks with Magnum explaining the radiographs to him, Higgins is wearing trousers. Interrupted by the intercom, Higgins then goes outside with the intent to shoo off TC and the "juvenile delinquents", but does so wearing shorts. (00:12:40 - 00:14:20)
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)
Continuity mistake: Magnum and TC are talking at the beginning of the episode, by Rick and his peachy polo. Magnum has always his hands on his hips in TC's close-ups and in front of his belly in the wider angle shots. (00:02:15)
Other mistake: Finally the gang is set free; the policeman says "Your bail arrived." Magnum asks "Carol Douglas?" But Carol's last name is Baldwin in the other episodes she's involved in. (00:35:30)
Continuity mistake: Magnum and TC hi-5 at the beginning of the episode. The football bounces at distance from TC in the first shot, but it's right at his feet after their hands clapped. (00:02:00)
