Continuity mistake: Magnum walks back from his swim and approaches Apollo (or Zeus) holding a pair of flipflops in his mouth. There's another large and smooth shadow to the left of the dog in the first shot, not making an appearance in Magnum's POV. (00:17:45)
Other mistake: At the USS Arizona Memorial, Judge Caine has flashbacks from the attack on Pearl Harbour, but he can't keep them in the correct aspect ratio. It's footage from a war movie (Tora! Tora! Tora!) but in the wrong proportions, so he's daydreaming of rather chunky Japanese planes. (00:39:10)
Continuity mistake: Rick spots Higgins at the club and tells Magnum to hurry up. He is wearing his ring and a bracelet on his right hand. When Higgins leave, it's the same, and you can even see he's wearing a watch with a leather bracelet on his left wrist. But then Magnum leaves too, and in the very last shot of the scene all the aforementioned accessories switch side. (00:29:10)
Continuity mistake: Shot from the waist up, Maku is wearing a bracelet on his left wrist and quite a lot of his soaking wet hair trapped under the towel he has across the shoulders. He then makes his way to his camping chair, and he has no bracelet and his hair drier and off the towel. (00:13:35)
Continuity mistake: After Kiki says that Maku bodysurfs "whenever he feels old", you can spot in the footage of the man in the ocean that he's wearing fins at his feet. Maku emerges from the ocean cool as a cucumber but with no fins. (00:12:50)
Visible crew/equipment: Magnum is on the beach with Maku's grandaughter as they observe him swim. They are in abundant company though, as In his sunglasses there's the reflection of several people - the camera crew. (00:12:20)
Audio problem: The young judge runs away from the guy he stabbed. He promptly then tells Diane "C'mon, get in the car, c'mon." Not only is the audio of different quality and dubbed later in studio, but Miguel Ferrer's lips don't move at all for the last part. (00:28:25)
Visible crew/equipment: Driving through an alley in present day jogs the memory of Judge Caine. On the right of the frame though (and left side of the Ferrari) you can see a contraption where the camera car for the fade-out shot is mounted. (00:24:55)
Continuity mistake: When the judge asks Magnum "Take me back to my hotel", in the background there's a woman in a blue pantsuit and there are people by a large building entrance she's approaching. Switching to another shot, and all of that is just gone. (00:24:40)
Continuity mistake: Magnum responds "Trust me" when Rick reminds him he's not driving the Ferrari. What follows is a close-up of Dutch, driving a right-hand car - shot has been flipped in post. (00:46:00)
Character mistake: Mrs. Pauley says that Magnum told her that Bobby is alive "a couple hours ago", but it was the day before. (00:42:25)
Audio problem: Rick's incredulous "Help?" when Higgins offers his aid to Magnum, is dubbed in poorly and at a volume and ambience in contrast with the rest of the scene. (00:29:45)
Audio problem: In the shot when Bobby and Diane drive off, the exhaust fumes show the car is turned on before the opportune sound is inserted. (00:28:25)
Continuity mistake: During the knife fight, people appear and disappear between shots from the flight of stairs outside. (00:27:40)
Continuity mistake: Judge Robert Caine comes out of the hotel while Magnum is munching Higgins' lunch and reading the articles. A couple (she wears purple) walk by him. Magnum spots him and scarfs down the last bit of the sandwich, closes the bag, starts the car; a good 30 seconds passed before he's out of of the parking lot, and yet next time the camera goes back to the judge, the couple from earlier is still passing him by. (00:21:40)
Revealing mistake: The article Magnum reads in his Ferrari, by the title "Local judge offered high court seat" begins like this; "A former Los Angeles Veterans young actress, a bone of contention feet wide and eight feet high. Powered by electricity, it carries its own won't even pay that." Filler text can't get better than that. (00:21:25)
Visible crew/equipment: Magnum asks the judge what could that woman from 40 years ago have on him, and as he waits his answer, he looks down. His sunglasses then are tilted in a way that reflects the lights of the set. (00:08:50)
Continuity mistake: Magnum walks up to his client, waiting on the beach in a suit. He tells him he's flattered; José Ferrer's arms are folded, at the cut they are down his side and only then he folds them. A very similar flub happens seconds later; he pulls the letter out of his pocket, and does it again in reverse shot. (00:07:05)
Continuity mistake: In the intro, Bobby holds Diane telling her nothing will go wrong - last famous words. Between the first shot and the close-up, her hair changes position on the shoulders, and when she hugs him, her hand is off and on his shoulder at the cut. (00:03:55)
Visible crew/equipment: Magnum and his reluctant passenger arrive to the designated location for the hostage exchange. As the van stops and the camera pans to the left, the camera casts a large shadow on the car of the bad guy. (00:40:40)
