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

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TV-PG | See all certifications »


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Release Date:

14 March 1969 (USA) See more »

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Did You Know?


The name of the librarian Mr. Atoz is a play on the phrase "A to Z". Author Jean Lisette Aroeste was a UCLA librarian at the time she wrote this script. See more »


Spock tells Zarabeth that he comes from a place "millions" of light-years away. The Milky Way is approximately 100,000 light-years in diameter - so "millions" of light-years would place Vulcan well outside the galaxy. This may be a sign of the dementia he suffers as a side-effect of time travel. See more »


Captain James T. Kirk: You better come back with me to the library. You'll be safe there. Dr. McCoy can see to those bruises.
Woman: I'm game, love. Lead and I'll follow. Where's library?
See more »

Alternate Versions

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


Featured in For the Love of Spock (2016) See more »

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User Reviews

Top Three for Me
10 May 2014 | by HitchcocSee 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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