Continuity mistake: During the undercover operation, Danny tells Chin to pull the plug on the operation "Let's get her out of there." Steve's hand is on his belt, but it then cuts to a close-up where he has his hand on the radio. Similarly, during a cut to a close-up on Daniel Dae Kim, Scott Caan's arm pops up in view out of nowhere. (00:32:35)
Continuity mistake: The police operation with Kono undercover begins showing a timestamp on the video feed saying that it's "Monday, 21:16:40" (approx). Inside the warehouse though, when the smuggler boss asks her what she does for a living, we're back in time at 21:14:18. From then on, the time changes inconsistently to 21:15:33, 21:16:46 (more than a minute when she is just turning around), 21:16:04 (again wrong order) and as he sends a text to the mole, the reply comes at 9:24, which would mean 5-6 mins have passed. (00:31:30 - 00:34:10)
Continuity mistake: Grace Park comes out of the water and punches a guy; the part of the surf with the red and black logo faces up. Then she picks it up, and, in a way that does not register right consider her motion and the rotation, that side of the board is facing her. Another cut, and the board is facing the opposite direction. (00:28:20)
Continuity mistake: When Danny and Steve are standing dressed like dorks in the parking lot outside Kamekona's joint, behind them on the left there's a guy who is changing bathing suits using a towel to cover himself. When they speak with the pesky kid the guy finishes his deed and leaves, but when Danny reaches inside the car for the big pink fuzzy thing, that guy is back in that spot. (00:26:05)
Continuity mistake: When Steve McGarrett takes the picture of the footprint, what is photographing is different from what was shown earlier; the print and the objects to the left shifted - easy to tell using the tiles as reference, since in the picture the heel of the foot stops right at the line between two tiles, while it went well across it in the original shot. (00:10:50)
Continuity mistake: Danny and Grace get up to go buy some nachos; at the cut, both Chin and Steve's hands have changed position. (00:01:55)
Continuity mistake: When Steve and Danny enter Bar 35 it's daylight, and when they leave after no more than a few minutes it's completely dark.
Mai ka po mai ka 'oia'i'o - S9-E9
Continuity mistake: When Jerry visits the comic store, the girl behind the counter brings him a new batch of comics. In that frame, the register's screen in front of her has a new Microsoft Edge web opened. The camera then refocuses on Jerry and Grover. A few seconds later, the camera refocuses on the girl behind the counter showing the register's screen has something else opened. (00:25:05)
Ai no i ka 'ape he mane'o no ko ka nuku. - S9-E18
Continuity mistake: Jerry is briefing the team. He says that HPD processed "the van" and found... This is the first mention that HPD even found a van. They were looking with keys found on the victim to see if nearby vehicles would fit them, but there was no prior mention that they had found any vehicle at all. (00:08:50)
Ke iho mai nei ko luna - S9-E13
Continuity mistake: McGarett is going to free dive to Neptune 1 to take some scuba tanks to the crew below. We see him get in the water, and there is one tank ready to be passed to him. In the next shot he is being given the tanks, only now there are two. (00:37:10)
Hala I Ke Ala O'i'ole Mai - S9-E11
Continuity mistake: The McGarrett team is seen loading a US Coast Guard C-130H. Shortly thereafter, a takeoff shot shows a C-130, but it is not a Coast Guard aircraft. (00:08:10 - 00:11:00)
Pio ke kukui, po'ele ka hale - S9-E10
Continuity mistake: Before the gunfight, Joe tells Steve not to wait too long to find someone. There's a shot of the boards over the window beside him, and they're fully intact. Seconds later, when he says "no visual", well before the gunfire actually starts, they're suddenly riddled with bullet holes.
Mimiki Ke Kai, Ahuwale Ka Papa Leho - S9-E3
Continuity mistake: At the start, Meaghan Rath winds down her window and leans out to yell at the guy behind her. Leans back in, we cut to a shot outside the car and her window is instantly up.
Pua a'e la ka uwahi o ka moe - S9-E7
Continuity mistake: McGarett starts to work on a case file on his kitchen table. It is evening. His wrist watch says 9:13. The scene dissolves several times as he yawns and finally falls asleep. The wrist watch now says 9:10. (00:09:45)
Pua a'e la ka uwahi o ka moe - S9-E7
Continuity mistake: Right at the beginning of the show McGarrett and Dano are driving. The left windshield wiper is missing, then it is there in the next shot. Then both wipers are missing missing a few seconds later. (00:00:50)
Continuity mistake: Steve chases Jesse into a building. She opens a heavy door to the outside, slowing her down, and as she goes through he's about 10 feet behind her. We then cut to her running along a walkway and he's somehow dropped back another 20 feet.
Chosen answer: They are Junior's SEAL buddies.