According to Memory Alpha's original in Universe Timeline, the story sequence is:
Storm Front Part 2 : Assignment: Earth : The Cage.
In the Remastered Episodes Chronology, the release sequence is
Mudd's Women : Assignment: Earth : Court Martial.


The Enterprise is in Earth's orbit in the year 1968 for historical research, when the ship intercepts a transporter beam and a man named Gary Seven materializes on the ship. He claims to be a human being, sent by powerful aliens on a mission to save Earth from nuclear destruction. Gary Seven is taken into custody but escapes to his office on Earth, located in a building in New York.

Kirk and Spock find his office, but Seven is already on his way to the McKinley base to sabotage the launch of a nuclear weapons platform. Kirk and Spock follow him but are arrested by the base's security. Scotty almost succeeds in beaming him up again before he can finish his work, but thanks to the unsuspecting secretary Roberta Lincoln, who activates his transporting device, Seven materializes in his office again. When Lincoln realizes that Seven has brought the rocket off course and activated its warhead, she tries to stop the agent.

Kirk and Spock escape from McKinley and materialize in the office again. They have to trust Gary Seven that he is going to detonate the warhead in time before it can do any damage, but not without being a warning to humanity. The weapon goes off 104 miles above the ground, exactly as it was meant to happen according to historical records.

Errors and Explamnations

The Nitpicker's Guide for Classic Trekkers

Plot Oversights

  1. The big tension point at the end of the episode comes as Kirk tries to decide if he should let Seven operate the controls of his computer. Kirk isn't sure whether Seven will detonate the warhead or allow it to fall and begin World War Ill. If Kirk wants the warhead disposed of, why doesn't he just call the Enterprise and have them blow it out of the sky? Most likely, Scott could even fix it so it looks like the bomb actually exploded. This would increase the risk of Enterprise being discovered.
  2. At the end of the episode, Spock announces that everything happened just as it should have. To substantiate this claim, the Vulcan states that the library record tapes show the missile detonating at precisely the location that they just witnessed. What else would the record tapes show? The tapes come from the future. Let’s say that the record tapes at the beginning of the episode show the warhead detonating at two hundred miles above the surface of the Earth. Those tapes would have been recorded sometime after 1968 - for the sake of argument, A.D. 2200. Now, let’s say Kirk and Spock disrupt history, and the missile explodes at an elevation of 104 miles. It is now 1968. When 2200 rolls around, historians will record that the detonation occurred at 104 miles and put that fact on the record tapes. These tapes will be sent to the Enterprise. The Enterprise will travel back in time to 1968. Any change in history will instantaneously appear on the tapes, just as reality instantaneously changed when McCoy jumped into the Guardian of Forever in The City on the Edge of Forever. (However, in that case, Kirk and the others on the surface weren't affected by the revision of history, because the Guardian evidently projects a local field to isolate itself and anyone close by from temporal disturbances. At least that's what the creators would like us to think.) Perhaps the warhead was always intended to explode at 104 miles, and the Enterprise was somehow protected from changes in the timeline by the modifications for this mission.

Changed Premises

  1. Kirk states that the Enterprise has traveled into the past to do historical research. Yet in the Star Trek: The Next Generation episode A Matter of Time, Picard asks Rasmussen when historians will begin using time travel for their studies. Evidently Picard hasn't read the logs of previous Enterprise captains. Picard is referring to professional historians.

Equipment Oddities

  1. Up to this point, phasers have always tired a beam of light, even on stun. When Kirk fires at Seven in the transporter room, the phaser emits no beam. Probably an experimental setting for covert work.
  2. After Seven beams aboard, Kirk and Spock go to a briefing room to discuss the matter. At one point Scott talks to them from Engineering. His picture begins to fade as soon as he finishes relating his information, but Kirk doesn't reach over and “officially” turn off the viewscreen until a second or two later. Scotty could have closed the channel from his end.
  3. Spock carries Seven‘s cat into the aforementioned briefing room. When Seven escapes the brig, the cat hurries to find him. When the cat ‘leaves the briefing room, the doors open all the way, but when it enters the transporter room, the doors open only wide enough to let the feline slip through. The cat might have the ability to control the door.
  4. Seven escapes from the Enterprise and uses the ship’s transporter, but when he materializes in his office, it looks like he's using his own transporter. He may have used the Enterprise transporter to remotely activate the unit in his office.
  5. One of the displays on Seven’s Beta 5 computer looks very similar to Dr. Richard Daystrom’s M5 computer. Was Daystrom raised by aliens as well? The aliens that Seven is working for could have provided him with copies of the hardware used to produce the M-5.
  6. At the end of the episode, Seven makes his final report on a typewriter that transcribes speech. Earlier in the show, Seven used the computer to record his intentions. Why then does he still work in an antiquated medium like paper? Why not just use the computer to record his final report? He most likely needs a hard copy for the records, in case of computer failure.

Continuity And Production Problems

  1. The opening shot of the Enterprise shows it near India and travelling east. The following shot of the viewscreen on the main bridge shows the Enterprise travelling west. Also, according to these graphics, the Enterprise was over Asia when the transporter beam hit them. If Seven is travelling to his office in New York, why is the beam hitting Asia? The relative position of Seven's origin point could have placed the Enterprise over Asia in a way to block the direct path to New York.

Nit Central

  1. D.K. Henderson on Thursday, November 19, 1998 - 2:10 pm - The episode opens with Kirk commenting that they have their shields up to avoid detection from Earth. When Gary Seven's transporter beam hits them, he transports THROUGH the shields. I thought that this couldn't be done. Granted, it was a very powerful beam, but Scott never commented on its ability to get through the shields, only on how far it was coming from. The aliens that trained and supported Seven presumably have technology capable of transporting through the shields, possibly via the sensor windows.
  2. Seven comments on the planet he's been trained at, saying that "Even in your time, it will remain unknown." How the heck does he know that? He doesn't even know what era Kirk is from, only that he's from the future. Unless he came back in time--which Scott briefly hinted was possible. He may have been briefed on the various uniform styles used by Starfleet as part of his training.
  3. Apparently the planet Gary trained on knew 6,000 years ago that Earth was going to wind up in trouble. How omnipotent of them. The aliens are either time travelers, or extremely good at prediction.
  4. Kirk seemed rather indifferent about beaming those police officers back down off the ship. I certainly wouldn't trust them to just shrug the experience off as a dual hallucination. He is counting on them not being believed if they mentioned it - assuming their memories weren't suppressed somehow, as suggested by Bob Brehm on Tuesday, March 16, 1999 - 6:37 pm.
  5. MattS on Thursday, May 13, 1999 - 2:15 pm - Seven's predecessors were killed in an auto accident. Why would they bother travelling by car instead of beaming around like Seven does? Will Spencer on Monday, May 29, 2000 - 10:12 am - There's no indication how far or how close the former agents were to the office when they died in a car accident, so beaming to and from everywhere would be a waste of power and resources. Would they really beam to the library or home or grocery store when it's only a couple blocks away? Sooner or later they would have to use ground transportation, which they did, unfortunately for them.
  6. tim gueguen on Friday, May 26, 2000 - 10:32 pm - The biggest problem with this episode is the nuclear weapons platform. The US shouldn't have been putting one up in 1968 because they would be violating international treaties. The 1963 Limited Test Ban Treaty prohibited the detonation of nuclear devices in space, while the 1967 Outer Space Treaty prohibited the placing of nuclear weapons in space entirely. Apparently the writers of this episode didn't know much about arms control in the 60s. Those treaties may not have been in exsistance in the reality inhabited by the characters in Star Trek.
  7. LUIGI NOVI on Saturday, July 14, 2001 - 7:47 pm - Kirk points out to Seven that he could be an alien masquerading as a human. Spock adds that the decision to take him at his word is a difficult one. Why even bother with his word? I guess everyone, including Spock, forgot about the Vulcan mind meld. Spock pointed out that the nerve pinch didn’t work on Seven, so the creators could’ve had him unsuccessfully attempt a meld, but never bother. They probably realised that a human who is immune to the effects of a nerve pinch would also be able to mask his thoughts from a mind meld.
  8. John A. Lang (Johnalang) on Thursday, August 09, 2007 - 5:06 pm - Why is Spock using a MEDICAL TRICORDER to help Kirk find Gary 7? Wouldn't a regular Tricorder be in order here? No it wouldn't - they are trying to locate Seven by tracking his vital signs and physiology.


  1. Uncredited cast: Victoria Vetri as Isis in Human form and Barbara Babcock as Beta 5 Computer Voice
  2. According to the episode list, the provisional stardate for this episode is 4739.

The Original Series Season 2
Catspaw I Metamorphosis I Friday's Child I Who Mourns for Adonais?I Amok Time I The Doomsday Machine I Wolf in the Fold I The Changeling I The Apple I Mirror, Mirror I The Deadly Years I I, Mudd I The Trouble with Tribbles I Bread and Circuses I Journey to Babel I A Private Little War I The Gamesters of Triskelion I Obsession I The Immunity Syndrome I A Piece of the Action I By Any Other Name I Return to Tomorrow I Patterns of Force I The Ultimate Computer I The Omega Glory I Assignment: Earth
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