Other mistake: Higgins is outraged about a precious 1923 sketch being stolen by Rick's friend. Then again, that invaluable (as he puts it) piece of paper was stored in an open rack, rolled up with a rubber band. That's hardly how such an antiquity would be preserved by someone who finds it this valuable.
Other mistake: Magnum wakes up because Agatha and Higgins are playing with their model planes that loudly buzz in the air. He opens his bedroom window and here they are, by the guesthouse, with a direct view and Higgins waving at him. He then gets out to give them a verbal beating, and he's coming from the main house area. (00:02:15)
Continuity mistake: At the bar, Rick's sister puts make-up on. She leaves the necessaire on the table when she begins to disrobe. She then picks up the clothes, and the make-up tools changed place and multiplied, showing also the brush and an additional powder box. (00:10:30)
Continuity mistake: In the club scene when Magnum finds out Rick's little sister is not that innocent, the same extras do back and forth plenty times, sometimes back-back or forth-forth too with no continuity. One of the most obvious offenders is the girl wearing a red dress splotched with blue flowers; she is in every other shot at the beginning and comes from Magnum's left twice in a row. (00:10:35)
Continuity mistake: Magnum stands up to drag Rick's debaucherous sister to Bambi; a drink appears in front of the girl all of a sudden, and so does Magnum's beer. (00:11:55)
Other mistake: Rick enters Wendy's room shouting like a madman, and then reaches the bedroom door trying to turn and pull the knob. He bangs the door, calls for Magnum's help, and both then bust the door open. In all that, the guy going through Wendy's underwear and bed sheets is still unfazed and stops what he's doing merely when they almost fall on him. (00:18:00)
Revealing mistake: When Magnum gives chase to the guy who took the elevator, you can spot Tom Lupo (Selleck's stunt double) 's face. He's the one doing the hard work of running down the stairs. (00:18:20)
Continuity mistake: Magnum asks Carol Baldwin "Please, come on, I need to know" pointing at her bag containing a large folder. Her left hand holds the bag differently at the cut (thumb on the inside / thumb against the buckle). (00:24:05)
Continuity mistake: The kid in the hospital has a very slim bracelet on his left wrist. In close-up when he sets the modem up he has a thick one. (00:24:30)
Visible crew/equipment: After Rick slugs Magnum at the beach, it cuts to Higgins fixing his broken miniature airplane at his desk, then just as the mini airplane collapses onto the desk, a crew member's right hand (presumably he was holding up the airplane's tail) with a ring on the index finger, is visible at the right side of the screen. (00:28:15)
Continuity mistake: After Rick has covered the distance from the rocks to the house and touches the wall, it cuts back to TC's chopper with Magnum. In those two shots the chopper has flotation pads, while in all the other flight views it has the normal skids. (00:36:00)
Plot hole: There's this remote drug hideout. A chopper flies by it, multiple salvos of uzis are fired, people are screaming...and yet this dude calmly approaches it and opens the door with a bag of groceries. Any of those sounds would have been heard for a mile or more in a place like that. There's no possible way that a drug merchant would unsuspectingly waltz into the place. And there's a buddy of his in a jeep (open one, too) waiting outside, who did not hear anything and nobody heard that vehicle approach, either. (00:39:20)
Revealing mistake: When TC's chopper flies over the runaway jeep, "TC" piloting the heli is some guy wearing a black ski mask. (00:40:15)
Continuity mistake: The final automatic weapon burst that brings down the baddies breaks in close-up the right stoplight and the back license plate. The car rolls over, and before the explosion the license is in one piece, but taped blank. (00:42:55)
Revealing mistake: When the jeep crashes flying in the air and rolling on one side, it is occupied by crash dummies, with blank faces and who flop lifeless out of the vehicle. (00:43:05)
Continuity mistake: In the finale, Rick says "But those agents said..." his left hand in the shade and with its side flat on the table by the beer stack. Next shot and it's raised and in a different spot, and so on and so forth as the two angles switch. (00:44:20)
Continuity mistake: During the ending, when Rick tries to be happy for avenging his sister, and when his buddies try to lighten up the mood, Larry Manetti's hands go from juxtaposed to entwined, back and forth several times. (00:44:35)
Revealing mistake: At the very conclusion, the plane exploding has two sets of wings, not the Spitfire model that was supposed to be. (00:47:25)
Character mistake: Magnum mutters that they can still make it to the second half of Bambi, "Thumper is probably still alive." Thumper does not die in "Bambi", as Magnum should know since he's seen the movie already. Props to him for being cautious with spoilers casually leaking a fake one, then?
Other mistake: The opening sequence featuring a blonde in an orange bikini showering on the beach is recognizable as reused from a kidnapping scene in one of the early episodes of the series, 4 years before; China Doll. (00:01:50)
