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.
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.
Continuity mistake: S1: E6 Loco - FBI Agent Quiñones places the whiskey bottle down on the table with the back label showing, but in the next shot, the front label on the bottle is showing (Wild Turkey 101). (00:29:38 - 00:29:59)
Factual error: Emir's rank insignia as a Bulgarian naval officer is incorrect. He appears to be wearing the three stars of a vice-admiral on his epaulettes (far too senior to command the ship he commands), but the rank rings on his lower sleeve (two narrow rings above one regular) are completely made up.
Paul Is Dead - S1-E6
Factual error: The female British astronaut is in her space suit. There is a supposedly British flag on her left sleeve. But the flag is wrong. The red diagonal stripes are centered on the white field. They should be off-centered by 3/5 of the white space. Not centered. This is a common mistake you find in British flags bought outside the UK.
Factual error: Abby gets out of the train via the driver's door. You see a front view of the train. The number on the train is 321434. This train runs on overhead lines, and it is being shown as a Gatwick Express train from Gatwick Airport to Victoria. The railway from Gatwick to Victoria has a third rail conductor, so this Class 321 train would not have been able to move. (00:50:02)
Episode #1.6 - S1-E6
Factual error: In Episode 6, Vincent comes out of his apartment building and before he reaches the curb, and has a chance to hail a cab, one is waiting for him. There was no ability to book a yellow cab in the 1980s.
Continuity mistake: As Rick is getting informed about the CRM's future plans, he is holding his knife under the table. The next shot shows his hand on the table, before showing his hand holding the knife under the table again. (00:23:50)