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 ...
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.
I'm game, love. Lead and I'll follow. Where's library?
Special Enhanced version Digitally Remastered with new exterior shots and remade opening theme song See more
Featured in For the Love of Spock