28 user 7 critic

All Our Yesterdays 

0:59 | Trailer
When Kirk, Spock and McCoy investigate the disappearance of a doomed planet's population, they find themselves trapped in different periods of that world's past.


Marvin J. Chomsky (as Marvin Chomsky)


Gene Roddenberry (created by), Jean Lisette Aroeste | 1 more credit »





Episode complete credited cast:
William Shatner ... Capt. Kirk
Leonard Nimoy ... Mr. Spock
DeForest Kelley ... Dr. McCoy
Mariette Hartley ... Zarabeth
Ian Wolfe ... Mr. Atoz
Kermit Murdock ... The Prosecutor
Ed Bakey Ed Bakey ... The First Fop
James Doohan ... Scott (voice)
Anna Karen Anna Karen ... Woman
Albert Cavens Albert Cavens ... Second Fop (as Al Cavens)
Stan Barrett Stan Barrett ... The Jailor
Johnny Haymer ... The Constable


When the planet Sarpeidon is about to be destroyed, by its star Beta Niobe becoming a supernova, Kirk (William Shatner), Spock (Leonard Nimoy) and McCoy (DeForest Kelley) beam down and find it evacuated except for its librarian, Mr. Atoz (Ian Wolfe), tending to his replicas. They are a collection of unusual discs, which play the planet's history and (to their surprise) allow their users to travel into the past through the atavachron, a time machine, into the periods each was studying on disc. The crew travels unprepared, McCoy and Spock find themselves locked in a frozen ice age 5,000 years ago, where Spock reverts to the barbaric age of the Vulcans. He becomes very easily agitated, and is intensely attracted to the political prisoner Zarabeth (Mariette Hartley), who enjoys getting company but tells them return is impossible. Kirk arrives in a Cromwellian period, where he's arrested and suspected of witchcraft. He soon realizes the magistrate must be a time traveler like him, and ... Written by KGF Vissers

Plot Summary | Add Synopsis


TV-PG | See all certifications »


Official Sites:

Official site





Release Date:

14 March 1969 (USA) See more »

Company Credits

Show more on IMDbPro »

Technical Specs


Sound Mix:




Aspect Ratio:

See full technical specs »

Did You Know?


The data storage disks would seem to anticipate DVD's. Another remarkably far-sighted piece of writing from the first version of Star Trek. Nothing like this was even talked about in the late 1960's. See more »


When Spock and Zarabeth are talking, Spock turns to see McCoy standing at the cave entrance and McCoy says, "You've been dishonest with me, Spock," but his lips don't move. See more »


The Prosecutor: Where are you from?
Captain James T. Kirk: An island.
The Prosecutor: What is this island?
Captain James T. Kirk: It's called Earth.
The Prosecutor: I know no... island Earth. No matter, continue.
See more »

Alternate Versions

Special Enhanced version Digitally Remastered with new exterior shots and remade opening theme song See more »


Referenced in Star Trek: Discovery: The Vulcan Hello (2017) See more »

Frequently Asked Questions

This FAQ is empty. Add the first question.

User Reviews

Enjoyable, but of course flawed....
9 February 2018 | by Brucey_DSee all my reviews

This is one of the better S3 episodes for sure and is well worth watching.

However as with any time travel plot, there are problems; here, any sense of impending doom ought to be tempered by the fact that they have at their disposal a machine that can put you back to where you were a few hours ago and give you enough time to sort things out, surely?

Anyway, I happily watched this episode several times without worrying overly about that and will probably happily watch it again. Shades of 'One Million Years BC' I am a sucker for a fur bikini.... BTW Mr A-to-Z (geddit?) may have been the inspiration for the shopkeeper in 'Mr Benn', who knows...?

0 of 1 people found this review helpful.  Was this review helpful to you? | Report this
Review this title | See all 28 user reviews »

Contribute to This Page

Free Movies and TV Shows You Can Watch Now

On IMDb TV, you can catch Hollywood hits and popular TV series at no cost. Select any poster below to play the movie, totally free!

Browse free movies and TV series

Stream Trending TV Series With Prime Video

Explore popular and recently added TV series available to stream now with Prime Video.

Start your free trial

Recently Viewed