Goofs for
Star Trek VI: The Undiscovered Country (1991) More at IMDbPro »

• Continuity: The clocks in the bridge when Spock is questioning Lt Valeris.
  
  
• Revealing mistakes: In the scene where Lt. Valeris slides down the pole to join Spock and Scotty on the lower deck, she strikes the bulkhead behind her as she reaches the bottom of the pole and it flexes, considerably.
  
  
• Revealing mistakes: When Chang's bird of Prey is destroyed, the black wires holding the model are visible through the red smoke. In addition to that, a small piece of debris can be seen to bounce back into view because it ricocheted of the sound stage floor.
  
  

• Continuity: When Sulu is telling Kirk the location of the peace conference, the monitors behind Kirk do not match with the image of Sulu in the main viewscreen.
  
  
• Continuity: The position of the Excelsior officer who talks about the location of Praxis.
  
  
• Audio/visual unsynchronized: On Rura Penthe, McCoy's lips initially aren't moving when he says, "He's definitely on about something, Jim."
  
  
• Incorrectly regarded as goofs: In the opening scene, Sulu's tea cup faces its printed side toward the camera which looks at Sulu, then Sulu drinks from it, we do not see him place it down. We see the cup next from Sulu's perspective, which is clear because not only is the printed text missing, but the handle is now on the other side. Other than the text and the handle, there is no other reference in either frame to determine which way the cup is facing, so there is no goof.
  
  
• Incorrectly regarded as goofs: Whenever Martia changes shape, her voice always remains the same. Yet when she becomes Kirk, her voice changes to match Kirk's. She may have been deliberately keeping the same voice earlier so Kirk and McCoy would be less confused.
  
  
• Continuity: In the kitchen scene, when Lieutenant Valeris is demonstrating to Commander Pavel Chekov that it is impossible to fire an unauthorized phaser on board a starship, the cook carrying the tray dodges the phaser beam twice.
  
  
• Revealing mistakes: In the locker room scene, the marks on the locker door where the magnetic boots are supposed to go can be seen (Velcro, painted the color of the locker).
  
  
• Continuity: Spock's hands after the mind meld with Valeris.
  
  
• Continuity: The clock on the bridge is frozen when Chang is talking through the speakers during the battle.
  
  
• Continuity: When Mccoy is giving CPR to Chancellor Gorkon, General Chang changes position between shots.
  
  
• Continuity: During the trial, the position of Kirk and McCoy changes between shots.
  
  
• Crew or equipment visible: At 01:26:19 in the Special Edition, during the scene where Kirk, Spock, and McCoy trick Valeris in the sick bay, a member of the film crew is visible to the side (stage left).
  
  
• Continuity: Whilst Kirk is fighting with Martia, who appears as Kirk, they are rolling around on the ground near to McCoy. The camera pans out and shows that they are start rolling towards McCoy's feet as though they are going to roll over him from his feet upwards. The shot then changes to a close-up of McCoy and Kirk and Martia roll over McCoy from his left side to his right.
  
  
• Continuity: When the Klingons are being beamed aboard for dinner, Scotty changes position between shots.
  
  
• Continuity: The name of the character "Uhura" is misspelled "Uhuru" in the end credits.
  
  
• Continuity: At the beginning of the film, when the Excelsior encounters the energy wave created by the explosion of Praxis, Sulu's hair goes from being neatly groomed to mussed up back to neatly groomed between shots.
  
  
• Continuity: When the second torpedo hits Grokon's ship, the clock above the viewscreen on the enterprise reads 01:38. The camera then cuts to Kirk. When we see the viewscreen again, Chang is displayed, but clock above his image reads 01:29. Then, once Kirk and McCoy are arrested on Kronos 1 when Spock says he's taking command, he notes the time as 01:23 hours.
  
  
• Audio/visual unsynchronized: When Scotty is reporting that the torpedo bay is "fully loaded" during the initial attack, the audio does not match the movements of his mouth in the reflection in the screen.
  
  
• Crew or equipment visible: During the assassination scene, after Chancellor Gorkon says "Find Chang!" the shadow of the camera can be seen on the left side of the screen in a shot of some doors opening.
  
  
• Continuity: When Spock puts the special detection patch on Kirk's shoulder, it is horizontal. But soon after, on the Klingon battle cruiser, it is vertical.
  
  
• Continuity: The recording of Kirk's log entry, heard during the trial, does not exactly match what Kirk says during the actual scene (though it's possible this was intended to be a clue of a conspiracy).
  
  
• Revealing mistakes: When the Klingon vessel loses gravity and the officer's pistol comes out of its holster, the string pulling the weapon free can be seen.
  
  
• Continuity: When Kirk and McCoy are arrested, one of the Klingon guards put Kirk's hands into the handcuffs twice.
  
  
• Audio/visual unsynchronized: In the galley, just as Scotty exits, Spock orders: "Valeris, please inform Starfleet Command that our warp drive is inoperative." Yet Spock's lip movements seem to indicate that the name "Valeris" was dubbed over "Commander Uhura," which would make sense given that the latter is the ship's communications officer and she is standing right there, but was likely changed to match the subsequent dialogue and action: Valeris asks, "A lie?"; Spock replies, "An error"; then Valeris walks away as Spock continues to speak with Uhura.
  
  
• Continuity: When Kirk reacts to the second torpedo fired at Kronos I his insignia pin is on the wrong side of his chest, revealing that the shot had been flipped.
  
  
• Revealing mistakes: In the brief scenes where Chancellor Gorkon is seen close-up floating in mid-air just before being shot, the wire with which he is being suspended is visible behind him.
  
  
• Continuity: During the scene when the Excelsior encounters the shock wave, Lieutenant Valtane starts next to Captain Sulu, then is shown near a console, then is shown moving the console he was previously at.
  
  
• Continuity: When the Enterprise crew observes the torpedo hit to the Excelsior, you can see red alert lights flashing on the bridge. But, when several crewmembers from the back of the bridge move to see the viewscreen, there are no lights flashing, and the ship appears to be on Condition Green.
  
  
• Factual errors: Lt. Valeris is wearing a red shirt under her uniform tunic, this denotes a Starfleet Academy Cadet and would not be worn by an officer on active duty on a starship.
  
  
• Continuity: At roughly four minutes in, Sulu's tea cup is about to fall off the stand in the close up. However, in the shot of Sulu and the crew struggling with the turbulence, the cup is close to the center.
  
  
• Continuity: At Kirk's trial, the Klingon officer who lost an arm in Gorkon's assassination testifies "After the first shot we lost our gravitational field." However, only after the second torpedo hit on Kronos One are the Klingons shown to lose gravity.
  
  
• Incorrectly regarded as goofs: In the vacuum of space, with no air (or water) molecules to be pushed, the shockwave caused by Praxis exploding would not occur. They would simply be hit by the main wave all at once. However, this wave obviously travels through a sub-space medium (in sub-space) or else would it would take years for the Shockwave to reach the ship. Moving in this manner, the ship would most definitely feels the affect (tremors) of the wave.
  
  
• Revealing mistakes: As Kirk and McCoy are descending the stairs into the prison on Rura Pente, there is a trio of aliens watching them come down. Watch the green, lizard-like alien in the middle. If you look at the base of his skull on the back of his head, you'll see a triangular opening just above the collar of his coat. This is obviously the opening that would allow the actor to take his alien mask off.
  
  
• Factual errors: After the explosion on Praxis, why (besides the visual impact) does the shockwave radiate in a flat plane? In space, a shockwave would radiate in three dimensions.
  
  
• Errors made by characters (possibly deliberate errors by the filmmakers): While referred to as "Lieutenant", Valeris wore the rank insignia of a Lieutenant Commander. A Lt. Cmdr. would be referred to as "Commander" and not "Lieutenant". So either Valeris wears the wrong rank insignia or isn't addressed properly
  
  
• Errors made by characters (possibly deliberate errors by the filmmakers): Gorkon says the phrase "the undiscovered country" from Shakespeare's "Hamlet" refers to the future, when in the actual play "the undiscovered country" stands for death.
  
  
• Factual errors: The explosion of the Klingon moon, Praxis, would have done more than possibly contaminate the atmosphere of the Klingon homeworld. The magnitude of the explosion portrayed would have altered the planet's orbit around its parent star, thus permanently altering (i.e., destroying) its ecological and meteorological systems.
  
  
• Plot holes: Since the torpedo being fired at Gorkon's ship, and Kirk and McCoy's subsequent beaming over, were unforeseen, how is it that Spock just happens to have a "tracer patch" in his hand to place on Kirk's shoulder?
  
  
• Plot holes: It is never shown how Kirk discovers that Spock placed a tracer patch on his uniform.
  
  
• Revealing mistakes: Rura Pente is supposedly so cold that a person's breath freezes when he is thrown to the ground, yet we do not see breath on any of the actors.
  
  
• Continuity: Valeris states that no one can fire an unauthorized phaser on a starship. This is evidenced when she fires on and alarms go off. Yet throughout all five series, phasers are fired on starships without any alarms.
  
  

• Continuity: SPOILER: When Lieutenant Valeris admits her guilt, stands in front of, and slightly to the left of, the main viewscreen where Kirk is talking to Chang. Lieutenant Valeris appears in one shot, disappears in the next shot which is slightly closer to the screen, and then reappears on the third shot of the viewscreen at the original distance from it.
  
  

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