Factual error: Looking at a nuclear explosion that close will burn your retinas irreparably. One can be blind 30 miles away, just by seeing the flash. The little girl at the start is looking directly at the explosion when it hits, and continues to watch.
Episode #1.5 - S1-E5
Plot hole: The Jackel visits Norman's hideout where they meticulously craft disassembled rifle parts in a walking boot. The Jackel takes the rifle out to test with nary a sign of the boot. He is nearly captured, escapes, and flees the country while Norman is captured and killed. But the Jackel arrives in Estonia wearing that one-of-a-kind handcrafted boot.
Continuity mistake: When Agatha is talking to Herbert at the police line, the position of her arms varies over several shots.
Episode #1.6 - S1-E6
Continuity mistake: Sami takes Maya directly from the location where Tommy Dark's body is found to his home, but Maya's outfit is completely different when they arrive.
Character mistake: When Samson is playing trivia with Cross' kids right at the beginning of the episode, he asks, "First black mayor of D.C.?" and the son answers, "Marion Barry." John awards him the point while his daughter asks, "Who?" Not the first black mayor of D.C., for sure, since that was his predecessor, Walter Washington. (00:03:30)
Factual error: At the very start, the lead parachutist says they're jumping from 30,000 feet, the altimeter confirms it, everyone whoops and cheers, and he gets them to put their masks on just before jumping. Two problems - the plane they're in is a De Havilland DHC-6 Twin Otter with a maximum altitude of 25,000 feet. And at 30,000 feet in an unpressurised aircraft there'd be nowhere near enough oxygen for shouting and cheering - they all should have had their masks on already.
Episode #1.4 - S1-E4
Continuity mistake: DC Li is wearing a white crewneck sweater with a blue band on the neckline until this episode, when she is suddenly wearing a blue button-up shirt. All episodes take place on a single flight.
Lost/Found - S1-E1
Factual error: A mechanic is outside the ship repairing the shields. A fire starts, and the fire burns just as it would in an atmosphere. Impossible in the vacuum of space.
Family Tree - S1-E3
Continuity mistake: When John goes to Per's home to convince him to return to work, John's shirt, which is initially hidden under his sweater, becomes visible as they walk.
Factual error: Tommy meets his son at the Patch Cafe in Midland, Texas. After the meeting with his son, Tommy leaves the Patch and drives out onto the road at Kenwood Ave and Camp Bowie West Rd. There is a JD's Hamburgers restaurant in the background, but JD's Hamburgers at that street location is in Fort Worth, Texas, not Midland, Texas. (00:20:44)
Revealing mistake: Major John "Bucky" Egan is struggling with a German soldier while Major Gale "Buck" Cleven escapes. He holds the soldier's rifle, which is a rubber prop, as it bends during the struggle.
And in the Beginning... - S1-E1
Factual error: The show is set in 1991, and Dexter walks past a Lehman Brothers stall at the jobs fair. The problem is that the stall and the marketing materials on it have the modern-day Lehman Brothers logo and branding. Back in 1991, the bank was called Shearson Lehman Brothers and had a completely different logo and colour scheme. It was only spun off into Lehman Brothers in 1994. (00:10:03)
Sophisticated Ladies Week - S1-E12
Continuity mistake: Captain Massey is at the bar and orders his usual drink. A woman, Heather, comes over and starts talking to him. In one of the shots over his shoulder, Massey has his hand resting on his mouth. In the reverse angle, his hands are down.
Visible crew/equipment: Outside the laundromat, when Cook comes out willingly to answer what he believes are follow-up questions, Lala whispers to Franks not to spook Cook. As Franks (with gritted teeth) leads Cook to the car, three T-marks (red, yellow, and green) are visible on the ground behind them. (00:16:45)
Other mistake: Ruth Slater's teeth are perfect and glistening upon her release from prison, even though she was an impoverished teen who spent 15 years in prison.
The Town with No Internet - S1-E6
Other mistake: After Abbie and Jan turn to look at the Alpha after fighting the vampugs, Jan breaks apart the broom in her hand. There is then a shot of Jan reflected in the Alpha's eyes, but her reflections are not backwards like they should be. (00:20:56)
Factual error: The crown above the GCHQ logo is not any sort of British crown.
When You Know, You Know - S2-E7
Continuity mistake: Morgan's wedding veil goes from front to back multiple times in the same scene. (00:09:32)
Continuity mistake: When Silva tells Fern that "that is not a thing Jedi say," he is looking right at her. In the next shot, he's looking straight ahead out the viewport. (00:08:13)