Visible crew/equipment: When Rick and AJ return to Harold's hotel suite they join Harold on the balcony, and when Harold keels over onto the floor, the reflections of crew and location set lighting are visible on the glass door. (00:36:45)
Visible crew/equipment: When Magnum returns to the estate he gets out of the Ferrari and runs, then promptly falls when he leaps over the wall, and while Magnum's on the ground the black T-mark is visible on the grass. (00:41:20)
Deliberate mistake: When the Simon brothers are parked across the street from the entrance to Robin's Nest, with Harold Sands in the back seat, Rick uses binoculars to have a closer look at the estate. In the POV shot from within the binoculars, the estate's entrance gate with a sign on the bricks is backwards, revealing it as a flipped shot. (00:12:40)
Revealing mistake: In the fight against the chauffeur that covers the retreat of Morgan Fairchild, the face of Tom Selleck's stunt double and his thinner moustache are noticeable in several shots - in particular the beginning when they fight close to the camera, and when the bad guy bearhugs Magnum. (00:44:00)
Revealing mistake: The Simon brothers manage to make their escape and Magnum and TC get back to Robin's nest reaching Rick and Higgins. From the open door you can see a single real plant, and a matte painting to act as background. (00:34:15)
Continuity mistake: When Magnum jumps over the garden wall, he bumps into rolled up rugs, unfurling one. Which looks the same way at the end of the scene when the same camera angle is used. But the middle part of the scene is shot in a different angle, closer to Tom Selleck's face as he crawls to Higgins and gets up, and in that angle the rugs are piled together in a different way, with the unrolled rug draped over the others. (00:41:35)
Audio problem: Back to the mansion after meeting Simon & Simon in the hotel room, Magnum narrowly misses the villain. Still clueless about it, runs to Higgins and hops over a wall. The ghastly yell he emits during his athletic effort is entirely off-pitch and at a different volume than his speech. They might as well have used a Wilhelm scream here. (00:41:30)
Continuity mistake: In the diversion at the beach, AJ removes his shirt in the wide shot with TC and Magnum telling him "You're not surfing", but he still has it up to the elbow in the frontal. (00:26:35)
Continuity mistake: In the lengthy scene with the suave Simon brother at the gate, he is always holding the second bar to the left in the wider angles, the third in closer shots. (00:19:25)
Character mistake: Higgins boasts about playing chemin de fer with Ferdinand II at the resort, but there has not been any sovereign by that name in the 20th century. (00:20:40)
Continuity mistake: When Higgins reminisces with A.J. Simon about his run-in in chemin de fer with Ferdinand II, he is holding his flashlight horizontal, pointed at Jameson Parker, but at the cut he is pointing downwards at the map. Jameson Parker is also holding the map differently, with his 3 last fingers joined together at first, spread wider apart in the other shot. (00:20:25)
Continuity mistake: When Higgins calls Magnum's grasp of human nature "preadolescent" there's a cut where Magnum's hands are positioned differently on the top of the paddle shaft. Throughout the whole scene there are other position shifts which are if not impossible (Magnum's hands remain off frame at least for a moment), unlikely and consistent within angle taken separately. (00:08:40)
Continuity mistake: When Catherine hands the statue to Higgins, he has his hand below her hand in the first shot, over hers in the next one. (00:06:05)
Continuity mistake: When the Hawaiian approaches the antiquarian at the beginning of the episode, which tells him that indeed had the statue of the Poison God, the handkerchief in his hand is held differently between shots; at the cut the hankie sticks out from the bottom of the fist, did not at the beginning. (00:03:00)
Continuity mistake: Magnum dumps the paddle on Higgins as he turns to speak with Mrs. Catherine Hailey. Higgins holds it with his hand positioned at different heights between shots. (00:09:55)
