Continuity mistake: TC is driving his team of youngsters for the 4th of July game; in the aerial shot of the van, it is driving a different road than the one shown in the interior view, and it's driving on the leftmost lane while it had cars on both sides of it and the right railing has been closer. (00:08:00)
Continuity mistake: Agatha is consoling Higgins for the loss at polo. She tells him that it was good strategy as she puts the pot down and puts her hand on the teacup. Next shot and as she elaborates she is holding nothing and putting her hand down to get the cup just then. (00:19:35)
Continuity mistake: During the chess game, Higgins does a Magnum on Agatha with his "I know what you're thinking...", causing her to raise her hands already at the very end of that specific shot. She will start the action all over again only later in a subsequent shot. (00:27:35)
Continuity mistake: When TC looks at a passing Ferrari and thinks about Magnum, the woman in close-up has her hair heavily windblown, while it's mostly still in the wider angle. (00:29:00)
Continuity mistake: TC gets anxious after passing by "She-Magnum" and honks at the cars in front of him at the traffic lights. It's obvious from the light and the buildings that the traffic lights shot is not matching the other views. (00:29:10)
Continuity mistake: Magnum's dad says on tape "I'll be home by the 4th." Both Magnum and his mom cheer. In close-up on Mrs. Magnum as the tape says "I hope so", Mini-Magnum is casting a shadow on her, but he was at greater distance in the previous shot, no shadow. (00:36:50)
Continuity mistake: TC and Higgins look into the guest house. From the top of the stairs looking down, there's a newspaper that is perfectly perched on top of the lamp shade. When they get downstairs and Higgins muses about abhorrent acts of perversion involving lizards, the sheet got limp. (00:37:45)
