For other uses, see All Our Yesterdays.

"All Our Yesterdays" was the 78th episode of Star Trek: The Original Series, the 23rd episode of the show's third and final season, first aired on 14 March 1969. The episode was written by Jean Lisette Aroeste, directed by Marvin Chomsky and novelized in Star Trek 4 by James Blish.


While on a mission to evacuate the population of planet Sarpeidon before their sun goes super nova, James T. Kirk, Spock, and Leonard McCoy find that with the exception of one person—Mr Atoz—the entire population has transported themselves via a time portal to various segments of that planet's past. Kirk finds himself in jail in the seventeenth century while Spock and McCoy are trapped with a beautiful exile in a prehistoric ice age!



AtozJames T. KirkLeonard McCoyMontgomery ScottSpockUnnamed Sarpeidon nativesZarabeth
Referenced only 

Starships and vehiclesEdit

USS Enterprise (Constitution-class heavy cruiser)


Beta NiobeSarpeidon
Referenced only 

Races and culturesEdit

HumanSarpeidon nativesVulcan

States and organizationsEdit

Inquisitional Tribunal

Other referencesEdit

17th centuryanglerassassinationatavachronbrainclass Mcommunicatorcookexilefrostbitehorseinquisitorjailerlanding partylibrarianlibrarylicenselogiclordmass suicidemedicinephysiologyprisonreplicaSarpeidon Ice Agespiritsoupsupernovaswordtape viewertime portalverism tapewitchwitchcraft


years prior to 2269 
Zarabeth is exiled to the past. (prior to episode/novelization)
stardate 5943.7, 2269 (2260s chronology, 2264–2270 Enterprise voyages
Enterprise travels to Sarpeidon.
Spock finds evidence he fathered a son. (TOS novel: Yesterday's Son)


Related storiesEdit


Video releasesEdit


published order
Previous episode:
The Savage Curtain
TOS episode produced Next episode:
Turnabout Intruder
Previous episode:
The Savage Curtain
TOS episode aired Next episode:
Turnabout Intruder
Previous story:
first story
Star Trek 4
Next story:
The Devil in the Dark
chronological order
Previous Adventure:
The Savage Curtain
Pocket Next Adventure:
Previous Adventure:
The Savage Curtain
Voyages of the
USS Enterprise (NCC-1701)
(2264 to 2270)
Next Adventure:
Turnabout Intruder

External linksEdit

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