Star Trek: The Animated Series (1973): S01E05 – More Tribbles, More Troubles


“More Tribbles, More Troubles” is the fifth episode of the first season of the animated American science fiction television series Star Trek.

It first aired in the NBC Saturday morning lineup on 06 October 1973, and was written by David Gerrold as a sequel to his Original Series episode “The Trouble with Tribbles“.

It featured the return of actor Stanley Adams reprising his role of trader Cyrano Jones.

In this episode, Kirk must figure out why the Klingons are trying to get a hold of Cyrano Jones while simultaneously protecting two automated grain carriers.

The writer of the episode, David Gerrold won both Hugo and Nebula awards for science fiction, and also wrote the episode “Bem” for this series.


On stardate 5392.4, while the Federation starship USS Enterprise escorts two robot cargo ships carrying quintotriticale, a new seed grain, to famine-stricken Sherman’s Planet, it encounters a Klingon battlecruiser pursuing a Federation scout ship. When the Enterprise rescues the pilot, the Klingons attack with a new energy weapon capable of incapacitating a starship and demand that the pilot be handed over to them.

The pilot turns out to be Cyrano Jones, an intergalactic trader well known to Captain Kirk and crew (Kirk refers to Jones as a “nuisance”). The Klingons desperately want Jones for introducing the tribble to Klingon planets where it has become a major pest, and for stealing a glommer, an animal the Klingons created via genetic engineering to prey on tribbles. Jones had stolen the only glommer prototype in existence.

Kirk expresses sympathy for the Klingons’ plight but reluctantly refuses to hand over Jones as he is a Federation citizen and entitled to the Enterprise’s protection.

Jones is now selling “safe” tribbles genetically engineered to omit their ordinarily unrestrained multiplicative proclivities. Chief Medical Officer Dr. McCoy discovers that although Jones’ “new” tribbles don’t reproduce, they still have ravenous appetites. Instead of reproducing, they now grow hugely fat. McCoy also discovers that the new large tribbles actually house many more tribbles inside of them.

Kirk and First Officer Spock manage to counter the Klingon weapon. Now at a disadvantage, the Klingons offer to settle for just the glommer. Kirk agrees and returns it – along with several well-fed (and huge) tribbles that scare it away. The Klingons also discover the larger tribble houses a colony of smaller ones when the Klingon captain orders his first officer to shoot the large tribble, only to inadvertently free the smaller ones inside. McCoy injects the remaining tribbles on the Enterprise with a serum to slow down their metabolic rate. They are finally “safe”.

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Production & Filming Details

  • Director(s): Hal Sutherland.
  • Writer(s): David Gerrold.
  • Release Date: 06 October 1973.
  • Running Time: 30 minutes.
  • Country: US.
  • Language: English.

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