Continuity mistake: Higgins arrives at the dingy motel and walks past some broad in green. He approaches the counter, and there are bathroom doors on the left wall. The men's room has a "Out of order (Do NOT use) " sign. Said sign is hanging on the right side of the door, but just from camera angle; during his chat with the filthy porter the sign is on the left side of the door. (00:21:15)
Continuity mistake: Higgins approaches the concierge of the Low Surf Motel, manned by none other than Donald P. Bellisario, the producer. There's a drunk man leaning to the desk and clinging to his bottle of booze; in the first shot, to the very left of the frame you can spot his right hand moves away from the bottle's neck and goes on the counter. Change of angle, and the guy is back holding the bottle with both hands. (00:21:15)
Continuity mistake: Father Paddy spots Higgins staring at him at the 'Beach Bar' and exclaims the title of the episode. The glass of watered down drink next to him is full. Next shot and it's almost empty, change and it's full again, etc. (00:23:30)
Character mistake: Higgins at the bar orders "Glencadam on the rocks", but it's been established since the pilot episode that he loathes ice in his drink of choice. (00:23:55)
Continuity mistake: The bartender at the Beach Bar serves Higgins the authentic Hawaiian scotch. It looks bad enough in close-up, but when Higgins holds it in hand the colour is even paler and the straw has even messier and more disgusting hair on top of the hula dancer doll. (00:24:35)
Continuity mistake: When Higgins raises his glass for a doomed to fail toast to the Queen, the level of so called scotch in his plastic cup changes between shots. (00:25:35)
Continuity mistake: Right after the scene at the rooftop bar is a wrap, there's a shot of TC's helicopter that features a different serial number from the normal one, and padded skids. Next shot and the skids slimmed down. They go back to the padding for other shots after Magnum photographs the cetacea. (00:27:00)
Visible crew/equipment: When Higgins places Anne Boleyn's crown in the box, just as he walks over to the hidden wallsafe, not only is a black T-mark is visible on the floor, the elegant bar table is raised on two small tacky wooden crates, in order to be taller in the following shot while Higgins pours drinks. (00:30:15)
Continuity mistake: The rosary in Father Paddy's hand changes position - look at the metal tag - before and after Higgins' exits his room. (00:32:00)
Continuity mistake: Magnum and TC are looking closely at Magnum's client punching the lights out of his sparring partner. After a brief cut to the boxer finishing the guy off, TC suddenly has a baseball hat on. (00:33:40)
Visible crew/equipment: Magnum urges Father Paddy and Faulkes to figure out who could have benefited by stealing the relic. In the following shot of the tour guide talking to the tourists, as she says, "as the ashes are no longer there, the church was a little out if our way," her chalk T-mark is visible on the ground, at her feet. (00:41:00)
Revealing mistake: As everyone marches towards the happy ending of the episode, the Higgins lookalike that walks by Magnum at the airport looks in fact nothing like Higgins. (00:41:50)
Continuity mistake: During the farewell to Brigadier Faulkes and Father McGuinness, the people in the background never transition from one shot to the reverse, effectively disappearing. (00:42:00)
Visible crew/equipment: At the airport, when Magnum presses Higgins to tell him all about Soo Ling, it cuts to a wide shot as the two start walking, and three tape marks (one black, two white) are visible on the floor behind them. (00:43:50)
Revealing mistake: In the classic ending of the episode, there's an obvious use of a dummy who falls in unnatural, stiff motion. (00:45:35)
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 is driving his team of youngsters for the 4th of July game; in the aerial shot of the van, it is driving a different road than the one shown in the interior view, and it's driving on the leftmost lane while it had cars on both sides of it and the right railing has been closer. (00:08:00)
Factual error: In the flashback of 6 years-old Magnum paddling with his dad before he leaves for the war in Korea, Mr. Magnum is wearing a Rolex GMT Master with the Pepsi bezel, a model designed in 1955, well after the war. (00:12:05)
Revealing mistake: When TC and the kids are watching the game live at the stadium, the film is much grainier making excessively obvious the usage of stock footage. (00:17:00)
Visible crew/equipment: During the flashback, while Magnum is on the longboard paddling five miles to the island, the chopper is flying over the open ocean when TC starts talking to himself about Magnum bucking for a section-8, and as the chopper's nose moves upward the reflection of set lighting, etc, can be seen on the windshield. (00:17:05)
