General · EdgepediaSeptember 17, 20265 min read

Where No Man Has Gone Before

"Where No Man Has Gone Before" is the second pilot episode of the American science-fiction television series Star Trek: The Original Series, written by Samuel A. Peeples and directed by James Goldstone, which convinced NBC to order the series after the first pilot, "The Cage," had been rejected.¹ It first aired on September 22, 1966, as the third episode broadcast of the first season.²

Key fact	Detail
Role in the series	Second pilot, commissioned after "The Cage" failed to sell the series to NBC; its acceptance led to the series being greenlit¹
Broadcast position	Third episode of season one aired, on September 22, 1966; written by Samuel A. Peeples, directed by James Goldstone²
Plot	An energy barrier at the galaxy's edge mutates Kirk's friend Gary Mitchell into a god-like entity disdainful of the "mortals" around him³
Legacy	Starfleet Academy received its first mention here, and TNG later adopted the gender-neutral title "Where No One Has Gone Before"⁴^•⁵

Why a second pilot was made

NBC executives who viewed "The Cage" concluded that Gene Roddenberry and Desilu Studios could produce mature science fiction, but that the story in that first pilot was not what the network wanted. In an unusual step, NBC requested a second pilot and made clear to Roddenberry that it wanted a simpler, less erotic action-adventure story and a somewhat different cast.¹ Roddenberry invited other writers to pitch story concepts, and out of three possibilities, "Where No Man Has Gone Before" by Samuel A. Peeples, "Mudd's Women" by Stephen Kandel, and "The Omega Glory" by Roddenberry himself, the network selected Peeples's script for production.¹ After viewing the finished film, NBC was sold, and Star Trek: The Original Series was officially greenlit.¹

Shooting on the second pilot began in July 1965.⁶ Leonard Nimoy was the only cast member retained from the first pilot, continuing as the half-Vulcan Mr. Spock, while William Shatner replaced Jeffrey Hunter as the captain.⁶^•⁷ The female first officer from "The Cage" was dropped entirely, and Scotty, Sulu, and later McCoy were added to the ensemble.⁷

Plot

While exploring the energy barrier at the galaxy's edge, a barrier that had crippled an earlier ship, the Valiant, the Enterprise passes through it and crew members with high ESP ratings are affected. Kirk's longtime friend and helmsman, Lieutenant Commander Gary Mitchell (Gary Lockwood), begins developing telekinesis and other superhuman powers, and psychiatrist Dr. Elizabeth Dehner (Sally Kellerman) is similarly changed.³^•² Power corrupts, and Mitchell comes to see the crew as beneath him; Kirk attempts to maroon him on a nearby planet and finally must battle one-on-one with a former friend who is now a powerful being.² Dehner, the sole voice initially curious about the superbeing, ultimately helps Kirk stop Mitchell at the cost of her own life.²

The episode is presented as an illustration of the axiom that absolute power corrupts absolutely, words spoken during its dénouement.⁸ It also established series elements beyond the plot: Mitchell's gravestone reads "James R. Kirk," and the episode contains the first mention of Starfleet Academy, when Mitchell recalls his college days with Kirk.²^•⁴

Production and effects

Visual effects. Unlike "The Cage," which used rear projection onto frosted screens, the viewing-screen graphics from the second pilot onward were separate optical elements inserted in post-production, so actors had to imagine what they were not seeing. The galactic barrier, scripted to resemble an aurora borealis, was created in part by flooding a brightly-lit cloud tank with colored ink and paint, photographing the results, and matting the footage to the size of the main viewing screen.¹

Reception and releases

The episode is consistently listed by critics among the original series' best efforts. In 2013, Wired ranked it one of the top ten episodes of the original series, noting Kirk's plea for compassion and the absence of series regulars such as Dr. McCoy, Uhura, and Chekov. In 2016, IGN ranked it number six in a top ten of original-series episodes and 17th among all Star Trek series; in 2018, PopMatters ranked it the fourth best episode of the original series. Zack Handlen of The A.V. Club gave it a 'B+', calling it "an awkward episode" that is "not without its charms."⁹

In 1967, Roddenberry was invited to submit both pilots and assorted production material to an institution for safekeeping, and he took a print of the pre-broadcast version to the World Science Fiction Convention in Cleveland, Ohio.⁵

Legacy

The title phrase entered the franchise's famous opening narration, "to boldly go where no man has gone before," and Star Trek: The Next Generation adopted a gender-neutral and species-neutral version of the episode's title for its own episode "Where No One Has Gone Before."⁵ Because it was the first produced episode of the Kirk era, it is often treated as the natural starting point of the original series in production order, and the showrunner of Star Trek: Strange New Worlds has said he intends that series to end at the Enterprise of "Where No Man Has Gone Before."

References

Initially written Sep 17, 2026 · Reviewed: Sep 19, 2026; Oct 25, 2026 · Edited: Sep 19, 2026; Oct 25, 2026