Factual error: When Maria is looking at Miguel's file, we see his Florida Driver's License. The expires date is wrong. FL driver's licenses expire on the person's birthday, not on the day the license was issued.
It's Alive! - S2-E1
Continuity mistake: When Batista is saying to Dexter "Did you even take my advice, Jose?" Doakes is not in the background. The next shot he is back in his spot. (00:10:00)
Continuity mistake: Near the beginning of episode 3, season 7, Dexter is attempting to take a mouth swab of a criminal in the interview room. When he first sits to request a swab from the man he is shown putting on forensic gloves. When the camera pans to him a second time to attempt taking a swab he no longer has forensic gloves on. As the man resists opening his mouth for a swab check Dexter is wearing forensics gloves again.
Continuity mistake: Dexter's hybrid SUV changes often. Sometimes it has satnav, sometimes it doesn't.
Continuity mistake: Arthur and Dexter make a u-turn to avoid a DNA checkpoint. The view from outside the van shows no oncoming traffic, but the view from inside the van shows several cars waiting for them to complete the u-turn. (00:53:20)
Continuity mistake: When Lumen stabs Dexter with his knife in the swamp, she hits right above his elbow which he grabs promptly. When the camera angle changes, he's now grabbing his upper arm that's bleeding from a different spot than where he was stabbed.
Continuity mistake: In the scene where Dexter is playing a video game on Miguel's office computer, Miguel is shown to close the game down. But in the next shot the game is visible on the screen before disappearing again in the shot afterwards. Additionally, the video game shown is Halo 3, which is only available on Xbox 360. When Miguel 'closes' the game, he is actually alt-tabbing from a "TWVidpla" window to "Plaindesktop.bmp," and a laptop battery indicator is visible. (00:12:55)
Continuity mistake: When Shanda is sat on Debra's desk, her handbag keeps moving from on her lap to at her side between shots.
Continuity mistake: When Dexter wakes up in front of Rita's house, he has a sweat patch on his shirt. When he gets into his car a minute later, it's gone.
Character mistake: Louis Greene, Masuka's new intern, is asked to find the person who purchased Rudy's prosthetic hand. He is unable to do so; however, as a consolation, he says "I installed a modded-up Intel chip to overclock your CPU." You can overclock your CPU, but you don't need another chip to do so. (00:44:00)
Suggested correction: Only K series intel CPU's can be overclocked so a CPU upgrade is understandable if the previous one was not overclockable.
Character mistake: When Dexter is looking up Travis Marshall on his laptop he mentions he lives at 1742 Vanderan Street, but on the licence details on screen the number reads 1026 Vanderan Street.
The Lion Sleeps Tonight - S3-E3
Continuity mistake: A man in a blue t-shirt and holding two beer cups is seen walking in front across Dexter and Miguel. In the next shot the same man is seen walking behind them. (00:15:40)
Character mistake: Searching for clues to identify a suspect, Masuka takes fingerprints from the interior of a truck. Back at the lab, he says he had two dozen prints and they all belong to the same person. Unless the prints are all of the same FINGER, there is no way he could know the prints were all from the same person without a suspect to compare them to. Masuka is a forensic expert and should know better. (00:15:40)
The Big One - S5-E12
Continuity mistake: When Dex gets the phone-call from the city archives he steals a red Pontiac Grand Am GT. When he crashes it at the camp it's a badly-painted orange Chevrolet. (00:21:00 - 00:28:00)
Suggested correction: The car is a red Pontiac but it is a Grand Prix, not a Grand Am.
Continuity mistake: Quinn brings Deb into the interrogation room and puts his coffee cup down about 6-8 inches from the end of the table. He then moves his chair and begins to talk to Deb without touching the coffee. In the next several shots the cup has moved to the middle of the desk, and the amount of steam rising from the cup keeps increasing as it sits there.
Seeing Red - S1-E10
Visible crew/equipment: When Dexter is walking towards the entrance of the Marina View Hotel to examine the crime scene, a boom mic is visible in the glass of the window on the right. (00:07:35)
Remember the Monsters? - S8-E12
Plot hole: In order to elude Elway at the airport, Dexter fills a backpack with random items and leaves it unattended under a seat, and then tells a desk clerk that he saw Elway deliberately put the backpack there and walk away, which leads to security detaining Elway and the airport being evacuated. Airports have security cameras everywhere, so security would have reviewed the footage and seen Dexter was the one who placed the bag there. They then would have gone through all security footage since he entered the airport in order to deduce his identity and then located and arrested him.
Remember the Monsters? - S8-E12
Plot hole: A couple episodes prior, Deputy Marshal Clayton stated that he shared Hannah's picture everywhere after receiving a tip that she may be in Miami. In the same episode, Hannah was spotted at a hospital and Clayton was called in about it. This should have only increased public awareness concerning her, but at the beginning of this episode, she somehow made it through airport security and all the way to her gate before spotting Elway and hiding from him in the ladies room.
Are You...? - S7-E1
Plot hole: It's out of character and against his code for Dexter to kill Viktor at the airport. Airports have security cameras everywhere (you can see one on the ceiling when he is wheeling Viktor into the unclaimed baggage storage), and using the unclaimed baggage storage as the kill room is equally unwise, because any airport employee could walk in at anytime and catch him red-handed. Dexter was caught murdering Travis Marshall by Deb just hours before, so if anything, he should be even more cautious.
Scar Tissue - S8-E4
Continuity mistake: When Debra is talking to Jacob Elway, a piece of salad appears on her fork and disappears the next second. (00:31:55)
