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.
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.
Factual error: In the mall where Jimmy meets Irene there is the Pandora logo in the background when Jimmy is going up the escalator. Pandora didn't open its first store in New Mexico until 2013. (00:27:00 - 00:28:00)
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)
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.
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: 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.
Continuity mistake: In season 1 they are tracking leopards but when they take a cub for the cure it's clearly an African serval kitten.
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)
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)
Gotta Be Me - S2-E22
Factual error: When Luis is in the video store, they pan out to show the video rack he was looking at. They show Disney's Tarzan on one of the racks. Being that this show is set between 1995-1998 for all 4 of the seasons, Tarzan should not be on the shelf as it was not out until 1999.
Character mistake: The diploma on the wall in Connor's office for the University of Kentucky, "university" is misspelled "universisty".
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)
Visible crew/equipment: [Unsure episode] When Judy proceeds to flip K.C. over, you can see a boom mike at the top of the screen, which K.C. narrowly misses.
Factual error: They used an EpiPen to bring Liv back but they're holding it backwards. The way it's being held, Ravi would have injected himself instead of Liv and she wouldn't be revived.
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)
Factual error: There is a periodic table shown in the background of the lab, showing an accurate periodic table as of now. During 1945, at least 21 elements had not been discovered. (00:17:40)
Plot hole: The car was tracked down by finding the original car key on Jimmy's body. If he had stolen the car from the original owner, how did he come to have the original car key?