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)
Revealing mistake: When Earl is carrying TC across his shoulders, Roger E. Mosley is replaced by his stunt double - you can even see his face, and he's also wearing a different belt - Mosley's is of a reddish brown, the stunt person's is dark chocolate. (00:26:20)
Revealing mistake: In one of the many cartoonish scenes involving Rick, he gets utterly stunned by the weak silly airplane-spin like movie Borgnine performs on him and after a chirping birds sound effect is played, he - or rather, his stuntman - does a Ric Flair faceflop. The stuntman is wearing tennis shoes with clean rubber soles. After his scene with Higgins, Magnum arrives with TC and Rick in a headlock - Rick falls in that shot, and he is wearing patent dress shoes with black soles. (00:27:20 - 00:29:40)
Revealing mistake: When Magnum stops the car right by Higgins who is tending to the plants, there's a close-up of the car tyres raising a lot of dust - or not, actually; it's as if the tyres were vacuuming the dust in! The footage is played backwards. (00:28:05)
Visible crew/equipment: Towards the end of the chat with Higgins while Rick and TC are learning "the fine art of eating the canvas", watch out when Higgins asks "So now you're questioning..." At the top of the screen, the boom mike' unmistakable shadow pops up and takes off to follow Magnum. (00:28:40)
Continuity mistake: Magnum goes to the archives, back home and then to Earl' son wearing khaki shirt and shorts and his Detroit Tigers cap. When he rushes his Ferrari back home, he's wearing jeans, a purple sweater and his Da Nang cap. (00:28:40)
Revealing mistake: When Earl punches Rick in the jaw, he's wearing his beanie hat. He (or rather, Mr. Borgnine's stunt double) uses his foot to flip him over, and he is not wearing a hat. When he releases Magnum from the 'Detroit death grip', we're back to a beanie-wearing Ernst Borgnine. (00:32:00)
Visible crew/equipment: When Higgins enters the guest house he walks down the stairs, and just as he comments about Rick's glass jaw, the actor's black T-mark is visible on the rug beside the couch. (00:33:45)
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)
Continuity mistake: When Higgins brings Earl at the airport, the same extras can be seen walking back and forth over and over - some instantaneously recognizable like the dark haired woman with the long azure patterned dress, or the woman with short hair, white top and khaki shorts, wearing a purple lei. (00:42:30)
Other mistake: During the airport reunion with father and son, there are several boxes of "Cole" brand pineapples...which are just Dole brand pineapples with masking tape put on to alter the letter D to a C. The tape came off one box revealing the original unaltered letter - you can also see it on the side of a box carried by an extra, Cole on the front, but Dole on the side. (00:43:05)
Visible crew/equipment: Towards the end of the episode, Magnum gets back to his Ferrari and shuts the door. In the door, you can see the reflection of the crew and lights. (00:45:20)
Other mistake: The supposed teen prodigy at the beginning of the episode hits the balls shot by the machine sky-high and off her right. Her coach and mum though are thoroughly impressed. (00:01:30)
Revealing mistake: At the beginning of the episode, the young tennis player hits a ball that smashes in many pieces. It does not produce the thick goopy juice that is squirted from a spot off camera in the next shot though, and the racket is entirely clean. (00:02:40)
Visible crew/equipment: Higgins butts in the innuendo-laced tennis exchange between the three friends at the beginning of the episode. Very first frame he's in, and look at the boom mike shadow on the left of the screen, on the floor. (00:03:30)
Continuity mistake: When Higgins makes his way towards the net and we get the wide shot of the court, there are obvious shadows from the foliage all over the playing space, which is totally sunlit in the other angles. (00:03:35)
Continuity mistake: Rick guesses the player Higgins managed to go against, "Tappy" Larsen. As he says the name, he puts the racket hand on the net and the ball hand behind it. Next shot and both are on it. Similar mistakes happens at the end of the reminiscing part of the convo, with Rick again suddenly changing position (hand on the racket all of a sudden) between shots. (00:04:35)
Continuity mistake: Carrie is having a hissy fit because she believes that Ginger tries to put strain on her ankle. The towel on her shoulder is folded differently in the different angles. (00:09:10)
Continuity mistake: Magnum is introduced to the capricious Carrie Reardon. She says that she hopes he's better than the last babysitter they gave her. Behind her, you can spot some tennis balls between courts. Kenny Phelps chases her, and the court is all clear. (00:09:35)
Continuity mistake: Discussing the hanged figurine in Higgins' study, Magnum is holding the string very close to the noose in the close-up, but definitely at large distance in the wider angles. (00:12:00)