Luther Gillis: File #521 - S4-E2
Other mistake: Higgins is on the lawn doing his martial arts demonstration, so there's nobody to open the gate that Luther passes in reverse gear. (00:21:55)
Luther Gillis: File #521 - S4-E2
Continuity mistake: Magnum is at the guesthouse with Luther. He grabs a Coops beer from the fridge, but does not close the cabinet door. Which is closed when Luther says he's gonna go get Artie. And then open again when Tom Selleck gets up and is in the same shot as Eugene Roche. (00:19:05)
Luther Gillis: File #521 - S4-E2
Character mistake: Agatha says that Higgins is teaching them "kung fu" although they all wear a karate gi and belts. Higgins then asks Luther to be a stand-in for the "jumping kick" demonstration, but the old lady charges at him with her hand at the ready for a karate chop. (00:16:00)
Luther Gillis: File #521 - S4-E2
Continuity mistake: Agatha reacts to the "He was shot" bit of info with concern in a close-up. A few seconds later there is a medium shot of her, and her karate gi is a whole lot more open. Definitely not the type of character or scene where it's implied she's showing some cleavage for Magnum. (00:15:50)
Luther Gillis: File #521 - S4-E2
Continuity mistake: Luther drives Magnum to the Nest while he shows him the book he wrote. During the trip, the cars behind either man in the rear window vanish at each cut, not appearing behind the other - particularly noticeable when a large truck roars past Luther right before Magnum tells him "Here we are" (00:14:30)
Luther Gillis: File #521 - S4-E2
Continuity mistake: Magnum gets dropped by the bullet to the temple; his left arm is stretched outwards, right angle with the body, but when Luther kneels by him to check him out on that side, the arm is not in the way. (00:13:00)
Luther Gillis: File #521 - S4-E2
Factual error: Luther shoots at the two yo-yos who shot Magnum; he shoots 7 times in rapid succession and an 8th round as he runs closer, but he carries a revolver with a 6 bullets capacity. (00:13:05)
Luther Gillis: File #521 - S4-E2
Continuity mistake: When Luther riles Tanaka up, at the beginning a cop with a yellow shirt and one with a black patterned one are in the background. First the yellow one, then the black one in separate shots move past the desk and exit stage left carrying a folder. A policewoman then does the same. In the second part of the scene all these people make their exit to the left again. (00:08:30)
Luther Gillis: File #521 - S4-E2
Continuity mistake: Luther tells Magnum "We're working the same side of the street"; in that wider angle the shadow on Tom Selleck's face and the pillow - actually how deep onto the pillow he is lying - changes compared to the close-ups that follow and precede. (00:06:30)
Luther Gillis: File #521 - S4-E2
Continuity mistake: In jail, Luther asks Magnum "So you're a private detective, uh?" In close-up he's close to Magnum's knee, after the cut on Magnum correcting him with "Investigator" he's by his shoe. (00:06:20)
Luther Gillis: File #521 - S4-E2
Other mistake: The policeman opens the closet door in the most transparent "a corpse is going to fall off from here and I know it" way, stepping away from it and even looking down where the body will drop. (00:05:45)
Revealing mistake: When Magnum screams to attract Rick's attention and you can see the whole yacht, you can spot the real driver of the boat on the flybridge, not lit. (00:41:00)
Other mistake: Magnum is 5 years old when his dad leaves for Korea, and is 6 by the time he's dead, coming back in a coffin on July 4th 1951. That does not work with the birthdate that appeared on the driver license in Memories Are Forever, episode 2-5, which is even abundantly referenced here with footage being re-used (Magnum's wedding party with bombs, and making love to his wife years later in the guest house). He was born January 5th 1946 in the document shown in close-up there.
Other mistake: Rick breaks off his hot date and goes searching for Magnum driving his boat for a long while -before- contacting Higgins to see if Magnum is missing at all. It also is the middle of the night and close to dawn (Magnum has to wait just one hour before the sun comes up) but Rick is still drinking wine (but not drunk) and hasn't even touched second base with the girl despite the fact that they were mixing wine and going below when the sun was still up.
Other mistake: Higgins says he hasn't seen Magnum (or his surf ski) "for two days", but Magnum left on the morning of the 4th, and has been in the ocean for 20 hours total. He spends the 4th on his own, but on the 3rd his friends and the ever-seeing majordomo of the estate should have gotten any sign of his presence.
Revealing mistake: In the first shot with Magnum on his surf ski, Tom Selleck is replaced by a body double whose face can be seen distinctly behind the large wave. (00:02:40)
Continuity mistake: TC and Higgins look into the guest house. From the top of the stairs looking down, there's a newspaper that is perfectly perched on top of the lamp shade. When they get downstairs and Higgins muses about abhorrent acts of perversion involving lizards, the sheet got limp. (00:37:45)
Continuity mistake: Magnum's dad says on tape "I'll be home by the 4th." Both Magnum and his mom cheer. In close-up on Mrs. Magnum as the tape says "I hope so", Mini-Magnum is casting a shadow on her, but he was at greater distance in the previous shot, no shadow. (00:36:50)
Other mistake: Rick mentions "It'll take us half the night to limp home and I don't want to go through the reef in the dark with one engine." He's lying because he wants to spend the night with her, but even considering that, the fact that there are islands behind him as he speaks, but through all the rest of the scene both act as if they were in the middle of the ocean (she does not object, he looks out to sea with his binoculars), is a spoiler. (00:30:30)
Continuity mistake: TC gets anxious after passing by "She-Magnum" and honks at the cars in front of him at the traffic lights. It's obvious from the light and the buildings that the traffic lights shot is not matching the other views. (00:29:10)