While investigating and scanning an uncharted planet, the Enterprise and its quadrant of space are subjected to a violent force that seems to cause a 'blinking out' of everything near them. When the scanners resume, where once there was no life on the planet, now there is one life sign. Kirk, Spock and a security force beam down to investigate and find a man named Lazarus who collapses and is brought aboard the Enterprise for treatment. To complicate things further, the initial phenomenon almost totally drained their dilithium crystals. Starfleet and Kirk suspect this phenomenon could be a prelude to invasion. While interrogating Lazarus he tells Kirk that he's locked in a struggle with another being who is 'anti life' and is behind the phenomenon. The disruptions continue to occur and the ship's situation grows worse.
Did You Know?
When Lazarus sabotages the Engineering Panel to create an overload, and eventually steal several dilithium crystals, the electrical plugs he switches around are actually Dual Binding Post Plugs (banana plugs), very common when this show was made in the 1960s and still in use in 2021. See more
When the code factor one transmission comes through from Starfleet Command, before Commodore Barstow appears on screen or is otherwise identified, the bridge screen is still showing the planet below, and while the planet below is still showing, Kirk says "Kirk here, Enterprise standing by Commodore," although Kirk would have had no idea whether he was about to be speaking with a Commodore or an Admiral. See more
You'll be trapped inside that corridor with him forever. At each other's throats throughout time.
Is it such a large price to pay for the safety of two universes?
The closing credits are set against a combination background of stills from that episode and previous episodes. See more
Special Enhanced version Digitally Remastered with new exterior shots and remade opening theme song See more
Referenced in Suits: Meet the New Boss
Theme From Star Trek
Written by Alexander Courage See more