Continuity mistake: Higgins shows Magnum the phone with Katya in the eye of the camera; her pinky finger is right at the angle of the phone in the frontal view, closer to the other fingers in the reverse shot. (00:01:55)
Continuity mistake: Katya meets Magnum at the beginning of the episode. She sits on the couch in the wide shot, and the couch is strongly sunlit. The natural light in the rest of the scene is much softer and barely noticeable. (00:02:15)
Continuity mistake: The two guys who stalk Magnum take off and almost run him over. You can see them drive down a road as Magnum tumbles on the asphalt to avoid them. Then Magnum gets up, has a little exchange with Rick as they both gingerly hobble towards the car, and he finally starts it and drives off...and in the 10 seconds this takes, the car is still basically at the same spot as before. Slowest getaway ever. (00:07:20)
Continuity mistake: The car chase opens with the 2 cars driving past a Walmart, with the sign distinctly visible. A minute later, when the police joins in and Magnum says "Maybe not", the cars speed past the same Walmart as if they drove in circle. (00:07:40)
Continuity mistake: Magnum bursts into John Black's apartment;he explains to him that Katya sent him, and the man lowers his hands. They are back up in the reverse shot that follows. (00:17:05)
Continuity mistake: Magnum has been talking with Higgins (and then with the home invaders) through the phone placed in the dashboard. When Sergei carjacks him, he's lucky enough to have his phone in the back pocket of his pants. (00:22:00)
Revealing mistake: In the sequence with Zeus and Apollo attacking the intruders, the padding of the jackets' arms they are sinking their teeth into is very noticeable. (00:32:15)
Continuity mistake: Higgins says "What if it didn't?" once she is free; she touches her forehead, the camera cuts away, and she is repeating the gesture in a separate shot. (00:33:15)
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)
Character mistake: When they are at the docks/harbor and they capture the person who poisoned the guy that hired Magnum, Higgins tells him if he resists, Magnum will shoot him. She says he has 16 bullets, but he's carrying a 1911 and the most it will have is 10 rounds.
Other mistake: A mayday call is received. It is shown on the moving map display as originating to starboard of the boat Magnum and Higgins are on. They promise to go help but turn to port. (00:01:50)
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)
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)
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)
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.
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)
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
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
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)
