Factual error: Justice in Hawaii works at a breakneck pace; TC is jailed and goes on trial instantly, which is fine, but also his impounded chopper goes for auction within a couple hours as well.
Revealing mistake: On the docks, Magnum saunters towards a payphone. The phone is not exactly a sturdy or well made prop, because it wobbles even before Magnum touches it. (00:26:40)
Revealing mistake: When Magnum wakes up finding the tape recorder on the pillow, his collarbone scar shows the contour of the prosthetic patch. (00:13:20)
Continuity mistake: During his scuffle with TC, Magnum is wearing the same white tennis shoes he was wearing in the ship scene in some shots (closer angles generally), and dirty, chunkier sneakers in others. (00:36:40)
Character mistake: Twirling their moustache at the success of their operation, the villains say that the heroin is worth 10 million dollars. When Rick looks at all the drugs, he says it must be worth "a couple millions."
Revealing mistake: When the bad guys try to escape from the warehouse, multiple tiremarks of their highly unusual maneuver (a sharp turn that leads away from the door, in that precise spot) are already visible on the ground, no doubt from previous takes. (00:44:45)
Continuity mistake: Frustrated by Joey's deception, TC tosses the bag of heroin on the dresser, and it ends up on top of a box. In the next shot, it changes position, being off the box. (00:40:25)
Audio problem: When Magnum is pushed against the metal shelves by TC, a big clunking sound is dubbed in, but you can see that the shelves and their content are not wobbled in the slightest and Tom Selleck jumped himself against them using his hands to impact in perfect safety. (00:36:40)
Revealing mistake: In the longshot of the fight when the phone begins to ring, the stuntman replacing Roger E. Mosley is quite visible. (00:37:05)
Continuity mistake: During their fight, Magnum in a close-up slams TC on a table. A chair is lying on the floor by the table; that chair will be toppled over only in the following shot. (00:37:00)
Continuity mistake: The foul concoction Magnum prepares based on his girlfriend's recipe fills the glass at a different level depending on the angle before Rick's arrival. (00:15:00)
Continuity mistake: Approaching the ship at the beginning of the episode, TC's chopper is the N58243 model, with the flotation skids. When he actually lands on the bridge though, it's N1095A. (00:02:05 - 00:03:00)
The Curse of the King Kamehameha Club - S1-E11
Continuity mistake: When Magnum pushes the journalist's foot off the accelerator and steps on the brake, he's wearing white worn-out Converse sneakers with light purple socks and she's wearing tan stockings and pumps. Wen they walked up to the car, though, she was wearing open toed shoes with no stockings, and Magnum was wearing brown boat shoes earlier when he arrived at Mr. Dollinger's home. (00:39:00 - 00:46:10)
The Curse of the King Kamehameha Club - S1-E11
Audio problem: In the last part of the final conversation between Magnum and Charlie, background noise comes and goes away depending on the camera angle. (00:48:20)
The Curse of the King Kamehameha Club - S1-E11
Revealing mistake: En route to the hut of the kahuna, TC is reading from a book. He reads "That is why curses or warning of death prayer" making exaggerated motions that undoubtedly establish that sentence being at the bottom of the page. Magnum then urges him to go on "That is why what?", and he resumes reading, but he's reading now (and again, makes very obvious he's reading and not just repeating from memory) from the opposite page. (00:17:35)
The Curse of the King Kamehameha Club - S1-E11
Continuity mistake: After the sugarcane fire fiasco, everyone is nervous. Magnum yells "Stop it!" to Higgins when he makes a bitter comeback to Rick. Kinda hilariously, Magnum yells that at a Higgins wearing a yellow-and-blue tie, but the Higgins that glances at him all sly is a red-and-blue-tied Higgins. (00:26:30)
The Curse of the King Kamehameha Club - S1-E11
Continuity mistake: After the unexpected death of the champion racer, the protagonists discuss in Rick's office. Higgins is wearing a blue blazer with the navy and beige tie he wore during the announcement and curse. The fire alarm rings, and for the kitchen scene Higgins somehow had time to change his tie to a regimental one with thin red stripes. (00:12:00 - 00:14:20)
The Curse of the King Kamehameha Club - S1-E11
Character mistake: Poolside before his mysterious illness, Rick tells Magnum that the board wants to cancel the "ski surf" race. That'd be the "surf ski" race. He should know, he organizes it. (00:33:15)
The Curse of the King Kamehameha Club - S1-E11
Other mistake: The cheesy red eye 'glow' effect at the end of the episode is in just one eye, unlike what it's said in the book TC read.
The Curse of the King Kamehameha Club - S1-E11
Audio problem: Norman approaches Magnum after the race; his voice is dubbed in, not matching the mouth - and a girl in the background in the first shot takes ages to appear in the second one. (00:47:25)