According to Memory Alpha's original in Universe Timeline, the story sequence is:
The Doomsday Machine : Day of the Dove : That Which Survives.
In the Remastered Episodes Chronology, the release sequence is
A Taste of Armageddon : Day of the Dove : Who Mourns for Adonais?.


The Enterprise receives a distress call from a human colony, but the landing party doesn't find any traces of it. Briefly later a badly damaged Klingon battlecruiser appears. Its commander Kang blames Kirk for the death of 400 members of his crew, just as Kirk makes the Klingons responsible for the destruction of the colony. The Klingon survivors are beamed to the Enterprise and confined.

Strangely all phasers on the ship mutate to blade weapons, and some of the Enterprise crew and the Klingons are trapped in the upper sections of the ship. They engage in endless skirmishes that are pointless because all wounds heal rapidly, whereby the balance of power is maintained. It turns out that an entity composed of pure energy is catalyzing the fighting, because it lives on hatred. With the help of Mara, Kang's wife, Kirk can finally convince Kang to bury the hatchet, whereupon the entity leaves the ship.

Errors and Explanations

The Nitpicker's Guide for Classic Trekkers

Plot Oversights

  1. When the alien seals most of the Enterprises crew in the lower decks, Kirk visits Kang and tells him about it. Does this seem sound strategically? Why would you tell your enemy that they are no longer vastly outnumbered? Additionally, during this discussion, Kirk and the security guards allow the Klingons to encircle them, almost completely blocking their way out of the room. ls the alien being causing the Starfleet officers to make these kinds of blunders? Perhaps Kirk is trying to negotiate a peaceful settlement, especially as the Klingons are aboard his ship.
  2. I've heard of a “glass jaw.” As I understand it, the term refers to a person who gets knocked unconscious with even a light tap to the chin. Until this episode I had never heard of a “glass elbow." When the Klingons capture Engineering, two of the warriors chase Scott out into the hall. As the fighting threesome cross the threshold, a Starfleet security guard brings his weapon down on a Klingon's elbow. The Klingon promptly falls down, unconscious. Applying pressure on the elbow of a Klingon could have a similar effect to a Vulcan nerve pinch.

Changed Premises

  1. On the surface of the planet, Kang claims that Klingons have no devil. lf that's true, it creates a changed premise in the Star Trek: The Next Generation episode Devil's Due. In that episode, Ardra changes herself into the Terran and Klingon versions of the devil.The Klingon that Ardra impersonated was Fek'lhr, the 'guardian' – ie gatekeeper - of Gre'thor, (where dishonoured Klingons spend eternity) which is not the same thing.

Equipment Oddities

  1. In “Arena,” Sulu could sense when the Gorn ship engaged their transporters. Yet in this episode the Klingons beam down to the planet but no one informs Kirk that they are coming. Are the Enterprises sensors unable to detect Klingon transporters? The Klingons are obviously better at masking their transporter signature.
  2. This episode marks the first time that more than six people have beamed up to the ship simultaneously. Originally Kirk, McCoy, Chekov, and Johnson transport down to the planet. Then five Klingons arrive. Moments later, Scott brings everyone back to the Enterprise. In The Apple, six officers beam down and then three more. This make sense, because there are only six transporter pads. On the other hand, it is possible that the transporter can scoop everyone off the surface but only reconstitute them six at a time. More likely that Enterprise has more than one transporter room.[N 1]
  3. Desiring to speak with Kang, Kirk risks intraship beaming to transport to Engineering. From the bridge Spock sets the controls and tells Kirk that he will have eight seconds to get on the pad. Kirk flips the controls, goes to the pad, walks back to the transporter console, pauses, lays down his sword, and finally gets back on“ the pad. Depending on when you start the countdown, it takes twelve to fifteen seconds. Something must has caused the countdown to slow down.

Internet Movie Database

Revealing mistakes

  1. When a sword appears in Kirk's hand, it is obviously blunted and dulled. It should have been sharp and dangerous for the camera close-up. The creature could have deliberately supplied swords that were blunt, in order to minimise injury, thus prolonging the lives of the combatants.

Nit Central

  1. Todd M. Pence on Tuesday, October 27, 1998 - 10:36 am: This evil disembodied entity doesn't use its abilities nearly as well as it could. If it can really alter people's memories, as it did with Chekov, why doesn't it make the Enterprise people forget about its existence whenever they are in danger of discovering it? Perhaps it needs people to remember it's exsistance in order to use them to maintain itself.
  2. Johnny Veitch on Saturday, April 03, 1999 - 6:22 am: At one point McCoy says "You can`t think of making peace with those friends!" I suppose that was a misprint and it should be "fiends", because if they were friends they wouldn`t need to make peace because they already had! McCoy is probably being sarcastic.


  1. This would make sense, as it would allow them to switch to another set of pads if the main pads fail. (Assuming, of course, nothing happens to disable to entire system, which is obviously what happened in The Enemy Within!)

The Original Series Season 3
Spectre of the Gun I Elaan of Troyius I The Paradise Syndrome I The Enterprise Incident I And the Children Shall Lead I Spock's Brain I Is There in Truth No Beauty? I The Empath I The Tholian Web I For the World Is Hollow and I Have Touched the Sky I Day of the Dove I Plato's Stepchildren I Wink of an Eye I That Which Survives I Let That Be Your Last Battlefield I Whom Gods Destroy I The Mark of Gideon I The Lights of Zetar I The Cloud Minders I The Way to Eden I Requiem for Methuselah I The Savage Curtain I All Our Yesterdays I Turnabout Intruder
Community content is available under CC-BY-SA unless otherwise noted.