Other mistake: Nuzo saved Magnum's life in Afghanistan, cauterizing with gunpowder a big deep wound that hit a blood vessel in his chest. Throughout the whole series, Magnum flaunts all the time his flawless torso, with no scars whatsoever. (00:20:40)
Continuity mistake: Magnum tries to dial the number found on the notepad. In the background behind the wrecked Ferrari there are 3 people. A policeman is walking towards them. Magnum waves the phone with disappointment during a cut, and the policeman instantly teleported meters forward and has joined the 3 other dudes. (00:14:25)
Continuity mistake: After the North Korean 'flashback' comes to a screeching halt, behind TC you can see that Rick is grabbing a beer that someone hands him. But who? Nuzo, of course...who is behind Thomas in the next shot, so on the opposite end of the room, and only after another cut walks across to give Rick that beer. (00:03:55)
Continuity mistake: Magnum in the first chase scene passes a device with "cool lights" to the kid in the back seat, but he's not calmed down by it. The car and the pursuing vehicle leap down a hill, and you can see the trunk of the car is a total mess, bulging wildly on the right side. However, it's fine in the rest of the chase. (00:03:05)
Continuity mistake: When Amanda identifies the perp in the picture Sakamoto brings, Higgins holds her shoulders in a different way in each shot. (00:26:50)
Continuity mistake: The first time we see Higgins, she is holding shock collars, but they keep switching hand throughout the scene. (00:06:00)
Six Paintings, One Frame - S1-E4
Continuity mistake: When Tracy passes her calling card to Magnum, the hair over her right shoulder is gone at the cut. (00:07:05)
Six Paintings, One Frame - S1-E4
Continuity mistake: Higgins' glass of shandy goes from one hand to the other repeatedly between shots. (00:07:40)
Death Is Only Temporary - S1-E6
Character mistake: The web page in memoriam of Elizabeth Cole is "In Memorium." (00:13:10)
Mondays Are for Murder - S2-E13
Visible crew/equipment: Magnum and TC are hurrying to catch an elevator in the parking garage. As they approach the elevator, you can see a cameraman against the wall on the right side that should not be there. The next shot shows the scene from that cameraman's perspective. (00:39:30)
Mondays Are for Murder - S2-E13
Plot hole: TC is being held at gunpoint and is told to get in a car in the parking garage and drive. Magnum cannot get a hold of TC on the phone and says that something is wrong. When TC drives off with a gun at his head we see Magnum in the Ferrari, in the parking garage and in pursuit of the car TC is driving. How did Magnum know that TC was being held at gunpoint and that he was in a car in the garage? (00:38:25)
Mondays Are for Murder - S2-E13
Plot hole: In an effort to keep Glenn's death as quiet as possible, Higgins hires a private pathologist to do an autopsy to see if there were any foreign substances or poisons in his system when he died. A few scenes later it is revealed that Glen was undergoing chemotherapy. How is it possible that the pathologist missed the cancer and the chemo treatment in his investigation? What he found was an excess of antacids.
Mondays Are for Murder - S2-E13
Revealing mistake: Mr. Castro is feeding Ellie the Goat an apple. If a goat were to be biting an apple, the cuts would be irregular. But a few moments later the apple is shown and it has two cuts and they are straight - both made with a knife. (00:25:30)
Mondays Are for Murder - S2-E13
Continuity mistake: Magnum and TC are in a stairway. TC points a security camera up so it does not cover a landing. Magnum and TC exchange a conversation, and the next time the camera is shown, it is pointing at the landing again. (00:12:55)
Factual error: Continuing the crossover with Hawaii Five-0, the CIA is supposedly searching people's homes, holding hostages, threatening to kill them if an SD card is not produced. This is not what the CIA does. They gather intelligence overseas, not domestically. And they are not a law enforcement agency. The FBI handles matter within the US.
Factual error: A taxi pulls up to a private jet at an airport in Hawaii. A public taxi cannot just pull up to an aircraft at an airport. It needs clearance to access airside areas. (00:21:05)
Other mistake: Magnum is shown in Captain Greene's office in uniform. He is wearing a US Navy Parachuteist Badge, his SEAL trident, and has the rank of Lieutenant. In the show intro section, he is always shown wearing just the trident, and has the rank of Lieutenant Commander. Was he demoted? (00:03:15)
The Day It All Came Together - S1-E20
Continuity mistake: Magnum and Higgins are traveling in the Ferrari going home. Magnum's wristwatch says it is 9:35. They go home, Magnum gets arrested by the Secret Service, is taken for an interrogation, is taken to a house where they find some counterfeit money and two bodies. Magnum is released and stays at the house with HPD, and then he and Higgins go back to the car and they leave. According to Magnum's wristwatch, only ten minutes have elapsed. (00:09:00)
The Day It All Came Together - S1-E20
Continuity mistake: While in the car with Higgins on the way home, Magnum's wristwatch says 9:45. He gets home and finds Hannah in the guest house. His wristwatch now says it is 9:17. (00:11:30)
Continuity mistake: In one scene a police car (number 412) is T-boned in the right rear quadrant. A spin shot of the car shows that quadrant dented and scraped. In a later scene the same police car driven by TC makes a left turn. There are no dents or scratches on the car. (00:33:00 - 00:34:15)