A Simple Investigation - S5-E17
Revealing mistake: When Odo and Arissa are talking in Odo's quarters, you can see where the star field ends and where the sound stage floor begins. (00:22:40)
Star Trek: Deep Space Nine (1993)
1 revealing mistake in A Simple Investigation - chronological order
Revealing mistake: As Kurn is chastising Worf in the infirmary, the actor's prosthetic nose has become detached from the rest of the Klingon make up. You can see the nose wobbling around as he talks.
The Way of the Warrior (1) - S4-E1
Julian Bashir: They broke seven of your transverse ribs and fractured your clavicle!
Elim Garak: Ah, but I got off several cutting remarks which no doubt did serious damage to their egos.
If Wishes were Horses - S1-E16
Trivia: Buck Bokai's baseball card, a collectible featured on Benjamin Sisko's desk, had actor Keone Young on the front, in character, but showed "Trek" model maker Gregory Jein, who invented the "history" of the character, on the back. The pair bore an uncanny resemblance to each other.
Emissary (1) - S1-E1
Question: Did Nana Visitor's hairstyle change from her first appearance in the episode to the next scene when they were going down the stairs?