Character mistake: Magnum and Higgins never retrieve the large and conspicuous device they used to hack the 'top level firewall' of the hotel database - and they even put it in a frontal USB port.
Continuity mistake: Toni thanks Rick at the end of the episode with the gift of a plant. When they are still by the gazebo, the flower is pointing different directions between shots. The plant also looks bent at a rather sharp angle in the shot when she says "I can't stay", but it's straight and fine in the rest of the scene. (00:37:30)
Continuity mistake: At the end of the episode, Rick ask to say a few words. In the wide shot ("Thank you"), Higgins is leaning her head on the left arm, elbow on the table. Closer view, and she is chilling all the way back on the chair. (00:36:55)
Continuity mistake: Magnum and TC pull over and shout at the man who just came out of the safety box deposit with a briefcase. Behind Magnum when he shouts "Russell!" you can see a woman with a baby stroller, wearing a teal top. She is getting inside a building. In Russell Chang's view, that woman is still far behind and has yet to reach the building. (00:29:10)
Continuity mistake: Magnum walks back towards Charlie after talking to Detective Gordon Katsumoto. TC by him is in a different spot between shots, one step or two steps close to him, which means being in the sun or not depending on the shot. (00:25:10)
Continuity mistake: Arrived at the hotel posing as Higgins' hubby, Magnum leans against the concierge desk...or not, depending whether the camera is behind him or not. (00:10:50)
Continuity mistake: Higgins and Thomas are walking in the hotel arm in arm. In the establishing shot there are two women talking almost in front of the sliding doors, but one is gone at the cut. Similarly, the distances between the other people in the hall are not consistent. (00:10:45)
Continuity mistake: Rick gets to Robin's Nest after the unsuccessful chat with Icepick. TC and Magnu mare browsing "FlicPhoto." Magnum pushes a button, one photo loads, but in close-up it's a different one. (00:09:15)
Continuity mistake: During the conversation with Icepick, his hand has perfect consistency as far as the pose goes, with one finger stretched along the receiver. What changes is the position of the hand, though; you can tell that between shots the tip of his forefinger is lower or higher up on the intercom phone, sometimes so high to be off the top of it. (00:07:00)
Continuity mistake: In the flashback, Toni tells Rick that Lyons rebought for 30k and didn't blink. Her hand is on her hip, elbow at right angle. Reverse shot, and her arm is down her side. (00:03:25)