Revealing mistake: In the final car chase, the military police radios for reinforcement; in the exterior shot that follows the one inside the limo with Rick on his back, foot on the cockpit, you can see quite distinctly the two stuntmen meant to be Magnum and Rick, and totally not looking like them. (00:46:30)
Other mistake: In a cute scene, the lads are helping Higgins pamper Magnum for his nefarious needs. So one of them drops a dry towel for Magnum on the stone platform he uses to come out of the tidal pool. It's a nice scene, but the stone block is isolated in water thigh-deep for 6'3" tall Tom Selleck, and one the doberman has trouble getting off from - you can see him look at the trainer off camera and then do a very awkward dive at the end. So there's no way that dog could have brought Magnum a towel, at least a DRY towel. (00:17:30)
Audio problem: When Zeus (or Apollo) drops the towel, Magnum looks at him and says "Hi guy!" in dub, but Tom Selleck's mouth is simply open as he is breathing in some air. (00:17:25)
Continuity mistake: At the end of the episode, Magnum manages to show up for the bridge game. He opens the gate and closes it behind himself; he makes the appropriate motion and there's even a wooden clunking noise. Still, in the shot that follows, the gate is wide open. (00:47:35)
Continuity mistake: Magnum does not realise he's been tailed, and goes to pick up Kiki as promised. He picks her up at a bus stop...but the bus stop sign is gone at the first cut. (00:33:40)
Revealing mistake: The pursuing Marines call for backup, and a second jeep answers the call - through mirrored footage, though; the driver is on the right side. (00:43:30)
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)