Star Trek: Season 3, Episode 23

All Our Yesterdays (14 Mar. 1969)

TV Episode  -   -  Action | Adventure | Sci-Fi
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Ratings: 8.3/10 from 758 users  
Reviews: 12 user | 3 critic

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.


(as Marvin Chomsky)


(created by),
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Title: All Our Yesterdays (14 Mar 1969)

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Episode complete credited cast:
Kermit Murdock ...
Ed Bakey ...
The First Fop
Scott (voice)
Anna Karen ...
Sarpeidon Mort
Albert Cavens ...
Second Fop (as Al Cavens)
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, Spock and McCoy beam down and find it evacuated except for Atoz, its librarian, tending with his replicas a collection of unusual discs, which play the planet's history and (to their surprise) allow their users to travel into the past trough the atavachron, a time machine, into the periods each was studying on disc, but they jump in unprepared. McCoy and Spock find themselves locked in a planetary ice age 5,000 years ago, where Spock reverts to the barbaric age of the Vulcans, hence touchy and intensely attracted to the political exilee Zarabeth, who enjoys getting company but tells them return is impossible. Kirk lands in a Cromwellian period, where he's arrested and suspected of witchcraft, but realizes the magistrate must be a time traveler like him, and learns not being prepared at molecular level he can return through the time portal, and in fact must do so and contact Spock and ... Written by KGF Vissers

Plot Summary | Add Synopsis

Plot Keywords:

ice age | library | meat | animal skin | fur | See more »


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Release Date:

14 March 1969 (USA)  »

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Technical Specs


Sound Mix:


Aspect Ratio:

1.33 : 1
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Did You Know?


There were two highly successful sequel books, Yesterday's Son, and Time for Yesterday, both by A.C. Crispin. See more »


When Spock, Jim and Bones meet the real Mr. Atoz he is sitting on a bench without any cushion. A few seconds later, when he offers Jim to sit on the bench, suddenly there is a cushion on the bench. See more »


Dr. McCoy: You've been dishonest with me, Spock, and that is also something new for you.
See more »


References Macbeth (1948) See more »

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User Reviews

Top Three for Me
10 May 2014 | by (United States) – See all my reviews

The writers finally managed to let their imaginations go. When a star is about to nova, the big three arrive on the planet, hoping to help evacuate the population. They beam down to a library, watched over by a rather abrasive Mr. Atos, a librarian who also has several holographic duplicates. He tells the boys that he is the last one left on the planet and he is leaving soon. All the others have used a device that reads discs and can send people back in time to a place they will enjoy being. Unfortunately for Kirk, he hears a screaming woman and rushes through a kind of portal and finds himself in a time lack that of the Three Musketeers. He is subdued and kept in prison, accused of being a witch. Simultaneously, Spock and McCoy make their ways through the portal, but find they have inadvertently used a disc putting them in the ice age. Nearly freezing to death, they are rescued by a beautiful woman in animal skins, played by Mariette Hartley. She had a magical quality as an actress. In a cave, over a hot spring, the twosome is given shelter. McCoy is practically frozen and Spock and the girl cover him to keep him warm. During this time, Spock, being 5000 years in the past, begins to revert to his primitive self. He and Mariette begin a bit of a relationship. His emotions, the emotions that the Vulcans avoided when they evolved, are back and he nearly kills McCoy. All principles have been told that they may never go back through the portal because they will die if they try. Kirk finds an ally as a judge from the time is also a time traveler.

This is a highly creative episode that sets up conditions under which the characters must function. The plot ebbs and flows and keeps one involved. There are similarities to "City on the Edge of Forever," my favorite, but it can stand on its own.

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