"The Lights of Zetar" is the eighteenth episode of the third season of the American science fiction television series Star Trek.
The landing party finds Memory Alpha's archives seriously damaged, and its staff dead, save one who makes the same guttural noises as Romaine, and then dies from what McCoy determines to be a brain hemorrhage.
After firing phaser warning shots, Kirk resorts to a full attack, and as the beams strike the storm, Romaine seems to react in pain.
Before they can place her into the pressure chamber, the aliens enter Romaine's body, and begin to speak through her, identifying themselves as survivors from the long-dead planet of Zetar.
With the conclusion of the crisis, Spock, McCoy, and Scott all agree that Romaine is fit to return to duty, with a new assignment to oversee salvaging and repairs of Memory Alpha's archives.
The project is soon thrown into turmoil by a murder plot that escalates into a looming crisis that threatens to repeat Memory Alpha's disaster.
This episode was released in Japan on December 21, 1993 as part of the complete season 3 LaserDisc set, Star Trek: Original Series log.3.