
Continuity mistake: When General Edel and Martin get in their car at the gas station, the fuel pump nozzle is still in the fuel port of the car. They drive off and the fuel pump nozzle has miraculously removed itself from the car.
Scott215
Confinement - S2-E5
Continuity mistake: Ruby asks Ash where the the Kandarian Dagger is. He says that it was confiscated by the police. In the previous episode, she had and used it, and they have not interacted in the intervening time period.

Episode #1.3 - S1-E3
Continuity mistake: Vera fires the gun several times, and later tells Justice Wargrave that the gun is empty, meaning that all the cartridges in it would be spent. When the judge loads his one bullet into the chamber, he does so in a gun where all five cartridge svisible are unspent.
Twotall
Continuity mistake: When Allison gives Kurt his breakfast muffin (in a brown paper bag), it suddenly jumps from his left hand to his right hand between shots.
THGhost
Continuity mistake: When Alicia is cleaning up Nick's vomit, she removes her gloves. When the angle changes, she starts removing them again. (00:24:45)
gamerunner93
Todos Los Hombres del Presidente - S3-E9
Visible crew/equipment: During the car crash, one of the camera shots is from above and you can see a camera vehicle moving into the shot from the bottom with the camera mounted in front of the vehicle. (00:35:25)
t3z3r
Character mistake: When Matt is talking to his priest Father Lantom, he says "it was a nice sermon" instead of "it was a nice homily." In the Catholic church "homily" is the correct word; sermons are Protestant. (00:11:30)

What Would Lucifer Do? - S3-E4
Other mistake: When Lucifer grabs Amenidiel's phone and is supposedly typing on it, he's holding it upside down. (00:06:25)

Continuity mistake: Near the start when Mike's pulling over, the car parks literally perfectly along the side of the road. Seconds later when camera shows him stepping out it's at least 12 inches away from the curb. (00:11:00)

The Silence of the Cicadas - S1-E3
Factual error: The station at the Arctic would have storage batteries to retain a charge for when storms obscure the solar panels, yet, once the bats cover the panels, they lose electricity.
goofyfootSuggested correction: The power drops out but later on in the episode they have backup power. The problem is that the bat that gets into the base then takes out the backup power.

Factual error: The home computer tablet controlling the alarm system shows June 11th, 2015 as a Wednesday. 06/11/15 was a Thursday.
Bishop73
Revealing mistake: Towards the end of the episode she picks up her phone but the screen shows the incoming call still coming through, and the screen doesn't go dark when she puts it to her ear. (00:29:30)

Visible crew/equipment: When the trainees breach a door in the hostage scenario a camera and two crew members are visible in the shot. (00:22:00)

Continuity mistake: As they are fleeing the alien base, Supergirl and the others run towards the portal, Winn activates it and jumps through. In a following shot (after a 'friendly' alien helps them), he is standing behind Supergirl again. (00:32:00 - 00:32:35)

Continuity mistake: A henchman places a briefcase up-side down on a bench, opens the locks and starts to open the briefcase with the locks above the lid latches which are flipped open toward the floor. Instantly the briefcase is right-side up with the locks down and the lid latches up. (00:26:11)

Plot hole: When Katty is first discussing the dead girl from the plane crash who had brains in her stomach, she says the girl's flesh indicated she died months before she ever got on the plane. But then later in the episode, Katty says the plane crash girl was at the boat party (massacre) the day before she got on the plane. Everyone at the boat party was alive before dying and turning into a zombie, so the girl's flesh would not indicate she was dead for months since she only died the day before.
Bishop73
Other mistake: John is promoted to Oberst Gruppenfeuhrer and assumes the uniform of such. He is soon after promoted to interim Reich Marshal. And then he is subsequently fully promoted to Reich Marshal. But he continues to wear the rank insignia of an Oberst Gruppenfeuhrer.
toroscan
Continuity mistake: The series doesn't seem sure what Sunny's rank is. He is described at various times both on screen and in the credits as both Detective Inspector and Detective Sergeant.
Necrothesp
Factual error: A 1973 Cadillac ambulance on the street is shown. The show is set in the 1960's.