One Enterprise crewmember seemingly is growing more and more intelligent, and soon is running the ship all by himself!
“The Nth Degree” is the 19th episode of the 4th season of Star Trek: The Next Generation. Written by Joe Menosky and directed by Rob Legato, it first aired in syndication on April 1st, 1991.
In the episode, the Enterprise is investigating the malfunction of one of their subspace telescopes. During the investigation, an alien probe knocks Lieutenant Reginald Barclay out. When the alien probe begins to chase the Enterprise, Barclay seemingly comes up with a solution to stop the probe and save the ship. Now, Barclay is growing out of his once-insecure shell and becoming hyper-intelligent, soon merging with the ship itself!
This is Dwight Schultz’s second appearance as Lt. Barclay in the franchise. He would go on to reprise the role later in The Next Generation, Voyager, and First Contact.