Revealing mistake: When Agatha and the other "ladies of the Sandwich Island Botanical Society" show up near the chopper, aside from TC's perfect reaction toward Higgie Baby, in this shot (and a following shot) the wood box and wedges are visible under the chopper, as they are there to be the stable step up for Agatha, when she enters the chopper from the other side. (00:45:00)
Revealing mistake: In the close-up of the newspaper with the headline about Karen being the suspect in the serial killings, the same 3 paragraphs are plastered randomly all over the page. (00:06:50)
Revealing mistake: When Higgins shows Magnum the article that (allegedly) manipulates his words to support the thesis that Karen was driven mad by 'Nam, the paper uses the famed recurring filler text that many Earl Hays Press papers use ("An immediate investigation is assured") that appears in dozens of movies. (00:15:50)
Revealing mistake: Magnum confronts on the beach the slimy journalist and he 'threatens' him. He then turns around to leave. Close-up on Reporter Eric Daniels and after a second you can see in the left corner of the screen a tiny bit of Magnum's maroon hawaiian shirt pop in view. He never left. (00:18:50)
Revealing mistake: During the flight towards Karen's location at the end of the episode, TC's chopper suddenly has emergency floats equipped on the skids in the shots when it flies over the coast. (00:43:00)
Revealing mistake: When the plane is blowing dust all over the lawyer and the money-conscious nephew, you can see the face of the extra piloting the plane instead of Donnelly Rhodes. (00:03:50)
Revealing mistake: Magnum takes an ancient gun from the cabinet and stumbles upon one of the eccentric millionaire's practical jokes. The joke though is an impossible one; the string that supposedly triggers it is not there, and when the gun goes off, Magnum is not holding the gun in a way that would pull it. (00:16:25)
Revealing mistake: During the gun prank, you can see in the revolver's cylinder the bullets - except when it squirts, the bullets are gone. (00:47:00)
The Arrow That Is Not Aimed - S3-E13
Revealing mistake: It is quite evident that Mako's sword does not touch the candle but smacks the table a few inches to the left. (00:17:05)
The Arrow That Is Not Aimed - S3-E13
Revealing mistake: The Yakuza boss contacted by Rick has an amputated pinky finger. In theory, because it's easy to spot the real finger bent and tucked in the shadow. (00:21:00)
The Arrow That Is Not Aimed - S3-E13
Revealing mistake: Facing an angry samurai swinging his sword John Belushi-style, Gallagher, the Tourist Shop Owner, wisely decides to hightail. When he shuts the door and when the angry Japanese touches said door to chase him, the whole wall shifts, revealing to be a set. (00:33:10)
The Arrow That Is Not Aimed - S3-E13
Revealing mistake: Gallagher, the Tourist Shop Owner has been fished by Magnum but, as one of the doc workers says, he's been "Down there long time, bro, pretty bad shape" and he is "in intensive care, unconscious" later in the episode. However, just before the camera cuts away he opens his eyes. (00:35:10)
Basket Case - S3-E14
Revealing mistake: Magnum's team loses by some extraordinarily bad luck, since the whole laws of physics conspire against him; the ball hits the hoop following a counterclockwise motion without going in, but in the last shot, when it flies away, it is spinning clockwise. (00:45:10)
Revealing mistake: In the aerial shot of the helicopter signaling the death of Merlin, its registration numbers are mirrored. (00:45:15)
Revealing mistake: In the Birdemic-like scene when Magnum barely escapes with his life from a deadly parrot before Higgins squeals it into suicide, our hero has multiple bleeding from lacerations on his arms that disappear one shot later, leaving room to face laceration who disappear in the following scene. (00:45:15)
Forty Years from Sand Island - S3-E17
Revealing mistake: After the savage beating, the two other prisoners go check out what happened inside the restroom. The take of Kirin Nakamura lying face down begins with the actor stretching his finger before he has to play corpse for a while not moving a muscle. (00:04:25)
Forty Years from Sand Island - S3-E17
Revealing mistake: Magnum usurped Higgins' desk while he's at the hospital. He is checking out of the article about Enoka running for Senate. If you look at the first article on the left, it begins with "The facts regarding the situation remain the same, state the authorities", the famous filler text that appears in dozens of props made by Earl Hayes Press. (00:16:35)
Forty Years from Sand Island - S3-E17
Revealing mistake: When Magnum rolls slowly in pain after being hit by the first box, and then when he rolls quickly to 'avoid' the others, his lab coat appears to have protective padding; there's a rectangular shape sticking out. (00:21:25)
Forty Years from Sand Island - S3-E17
Revealing mistake: When Higgins' wheelchair starts taking off and he cries "I say, MAGNUM!" you can see rise from the grass a thin line used to safely halt the chair when off camera. (00:28:05)
