Did You See the Sun Rise? - S3-E1
Continuity mistake: When Magnum is in the middle of his deductive process, Higgins indulges him answering that hardly anyone manufactures the gunpowder he needs anymore because of the low flashpoint. There's a cut in the middle of the sentence; the matches lined up in front of the chopping board are positioned differently on the right end, the one he places the newest victim at. (00:08:20)
Did You See the Sun Rise? - S3-E1
Continuity mistake: Magnum walks up to Higgins as he is beheading the matches. In the first shot he put just his hand on the desk, in close-up he is leaning all the way with his elbow. (00:07:20)
Continuity mistake: In the finale, the wet stain on Mr. MacLeish's body changes between the close-up and the wider angle. (00:47:15)
Continuity mistake: When a subservient TC grabs Magnum's suitcase, the torn-up gas bills move from his left hand to his right between shots. (00:22:15)
Continuity mistake: When Cora stands up saying "I don't have to listen to this", the blinds at the window Phil Lewis is standing close to are half open (that is, the top half open, the bottom half of the window obscured). In the rest of the scene the blinds are fully open. (00:37:55)
The Eighth Part of the Village - S3-E3
Continuity mistake: When the girls come out of the crate, the lid of the crate rests on top of it, sticking out by quite a bit, and parallel. During the fight, when Selleck is replaced by a stunt double, the lid sticks out by a small corner. Earlier when he was trying to talk his way out of it and let the girl go, the shadow of the lid also varied in size depending on the camera angle. (00:10:20)
Almost Home - S3-E10
Continuity mistake: In a remarkable coincidence, the Admiral Magnum needs to talk to happens to be chilling at his place about to get a mouthful of Higgins' buns. When he answers Magnum "Probably too much" after the vigorous shake, his left hand is behind the seat of the Ferrari, but it's on the car door in the shot that follows. (00:22:15)
Continuity mistake: During the car chase, Magnum is wearing a large wristband, which appears also in the close-ups of the gears being shifted. It's nowhere to be seen in the side views of Tom Selleck in the car, though. (00:21:40)
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)
The Arrow That Is Not Aimed - S3-E13
Continuity mistake: Magnum dives fully clothed to save Gallagher, the Tourist Shop Owner. Obviously he's soaking wet after that. Later at home, Magnum is sitting at the desk in the study wearing the same polo and jeans, bone dry. (00:35:00 - 00:36:10)
Continuity mistake: Magnum walks back to the car after spending 4 hours at the archives. A woman with a brown dress with a red belt crosses his path and walks away. Magnum then stands in front of the parkometer (and the parking tickets), but the woman is just then passing him by. (00:23:00)
Continuity mistake: Marisa during the movie gives Thomas an appointment. When she says "That's where I hid the papers." the woman in the background is leaning against her left hand. The chat continues in the next shot but the woman's position is different and gone is the hand. (00:30:20)
Did You See the Sun Rise? - S3-E1
Continuity mistake: Magnum's sling looks different before the flashback and after it when he speaks with Higgins. (00:48:50)