Thrill Kill - S5-E1
Factual error: When Dylan gets out of jail, a palm tree can be seen in the background behind him. This reveals that the scene was filmed in Los Angeles, not Philadelphia.
In the Dark - S4-E22
Revealing mistake: When Tony is telling Gibbs & Ducky that Abby got a hit on the dead sailor's fingerprints, Gibbs takes the file from Tony; the camera shows the file, which appears to be a legitimate profile sheet, but in the comments section, is the script that Tony just read aloud. (00:07:36)
Beauty and the Obese: Part 1 - S1-E1
Continuity mistake: Right after the opening scene where the model suddenly inflates to fat, we are taken to The Tender Loins club where the exterior shot shows a line of people with a bouncer checking each one. In this shot, his arms are down at his side, but then it cuts a close up and suddenly he has his hand lifted to his face looking at someone's I.D. (00:01:40)